鋅(xin)(Zinc)是(shi)(shi)一(yi)種(zhong)化(hua)學(xue)元素(su),它的(de)(de)(de)化(hua)學(xue)符(fu)號是(shi)(shi)Zn,它的(de)(de)(de)原子序數是(shi)(shi)30,在(zai)化(hua)學(xue)元素(su)周期(qi)表中(zhong)位于(yu)第4周期(qi)、第ⅡB族。鋅(xin)是(shi)(shi)一(yi)種(zhong)淺(qian)灰色的(de)(de)(de)過渡金屬,也是(shi)(shi)第四"常(chang)見"的(de)(de)(de)金屬。在(zai)現代工(gong)業中(zhong),鋅(xin)是(shi)(shi)電池(chi)制造上(shang)不可替代、相當重要的(de)(de)(de)金屬。此外,鋅(xin)也是(shi)(shi)人體必(bi)需的(de)(de)(de)微量元素(su)之一(yi),起著極其重要的(de)(de)(de)作用。
鋅(xin),它(ta)的(de)(de)(de)名(ming)稱“zinc”來源(yuan)于拉丁文Zincum,意思是(shi)“白色(se)薄層(ceng)”或(huo)“白色(se)沉積物”。化(hua)(hua)學符(fu)號是(shi)Zn,它(ta)的(de)(de)(de)原子(zi)序數是(shi)30,原子(zi)量為65.38。鋅(xin)是(shi)一種(zhong)銀(yin)白色(se)略帶淡藍(lan)色(se)金(jin)屬,密(mi)度(du)為7.14g/cm3,熔點為419.5℃。在(zai)室溫(wen)下,性較脆;100~150℃時,變軟;超過200℃后,又變干。鋅(xin)的(de)(de)(de)化(hua)(hua)學性質活潑(po),在(zai)常溫(wen)下的(de)(de)(de)空氣(qi)中,表(biao)面(mian)生(sheng)成一層(ceng)薄而致(zhi)密(mi)的(de)(de)(de)堿(jian)式碳酸鋅(xin)膜,可(ke)阻止進一步氧(yang)化(hua)(hua)。當溫(wen)度(du)達到225℃后,鋅(xin)劇烈氧(yang)化(hua)(hua)。
鋅在空氣中(zhong)很(hen)難燃(ran)燒,在氧(yang)氣中(zhong)發出強烈白(bai)光。鋅表面(mian)有一層氧(yang)化(hua)(hua)鋅,燃(ran)燒時冒出白(bai)煙(yan),白(bai)色(se)煙(yan)霧的(de)主(zhu)要(yao)成分是(shi)氧(yang)化(hua)(hua)鋅,不僅阻(zu)隔(ge)鋅燃(ran)燒,會折射(she)焰(yan)色(se)形(xing)成慘白(bai)光芒。鋅易溶于酸,也易從溶液(ye)中(zhong)置(zhi)換金(jin)、銀、銅等(deng)。鋅的(de)氧(yang)化(hua)(hua)膜熔點(dian)高,但金(jin)屬鋅熔點(dian)卻很(hen)低,所(suo)以在酒精燈上加(jia)熱鋅片,鋅片熔化(hua)(hua)變軟,卻不落下(xia),正是(shi)因為氧(yang)化(hua)(hua)膜的(de)作用。鋅主(zhu)要(yao)用于鋼鐵、冶(ye)金(jin)、機械(xie)、電氣、化(hua)(hua)工、輕工、軍事和醫藥等(deng)領域。
管(guan)制(zhi)(zhi)信息(xi):鋅粉別(bie)名鋅粒(li)、高純鋅、無(wu)砷鋅等屬于易制(zhi)(zhi)爆物(wu)品(pin),根據《危險化(hua)學品(pin)安全管(guan)理條例》受(shou)公安部門(men)管(guan)制(zhi)(zhi)。
《集韻》祖似切,音子。剛也。《玉篇》同釨(zi)。
相對原子量65.38(初中階(jie)段(duan)一般(ban)取65)
鋅(xin)是(shi)一種(zhong)藍(lan)白(bai)色金(jin)屬。當溫度(du)達(da)到225℃后(hou),鋅(xin)氧(yang)化激烈。鋅(xin)易(yi)溶于酸(suan),也易(yi)從溶液中(zhong)置(zhi)換(huan)金(jin)、銀、銅等(deng)。鋅(xin)在自然界中(zhong),多以硫化物狀態存在。主要含鋅(xin)礦物是(shi)閃鋅(xin)礦。也有少(shao)量氧(yang)化礦,如菱(ling)鋅(xin)礦,如菱(ling)鋅(xin)礦和異極礦。
原子半(ban)徑(jing)(計算值):135(142)pm
共價半徑:131pm
范德華半徑(jing):139pm
電子層:K-L-M-N
原子(zi)核外(wai)電子(zi)排布:2,8,18,2
電(dian)子排布式:[Ar]3d10 4s2
核電荷數:30
含量(ppm)
元素在(zai)太陽中的含(han)量:2
元(yuan)素在海水中的含量:0.00005(微量元(yuan)素)
地(di)殼中含量(liang)(liang):75(微(wei)量(liang)(liang)元素)
主氧化態:+2
其它:+1
電(dian)離能(單(dan)位:kj/mol)
M - M+ 906.4
M+ - M2+ 1733.3
M2+ - M3+ 3832.6
M3+ - M4+ 5730
M4+ - M5+ 7970
M5+ - M6+ 10400
M6+ - M7+ 12900
M7+ - M8+ 16800
M8+ - M9+ 19600
M9+ - M10+ 23000
晶體結構:密排六(liu)方體
a = 266.49 pm
b = 266.49 pm
c = 494.68 pm
α = 90°
β = 90°
γ = 120°同位素
同位(wei)素 豐(feng)度 半衰期(qi) 衰變模(mo)式(shi) 衰變能量MeV 衰變產物
64Zn 48.60% 穩(wen)定
65Zn 人(ren)造 244.26天(tian) 電子捕(bu)獲(huo) 1.352 65Cu
66Zn 27.90% 穩定
67Zn 4.10% 穩定
68Zn 18.80% 穩定
72Zn 人造 46.5小(xiao)時 β衰變 0.458 72Ga
常(chang)見的(de)含有鋅的(de)合金:馬口(kou)鐵——鍍錫薄(bo)鋼(gang)板;黃銅——鋅和銅的(de)合金,早(zao)被古人利用。黃銅的(de)生(sheng)產可能是冶(ye)金學上最早(zao)的(de)偶然發現之一。
體積:9.16×10-6 m3/mol
聲速:3700m/s(293.15K)
電負性:1.65(鮑林(lin)標(biao)度)
比熱(re)容:390J/(kg·K)
電(dian)導率:16.6×106/(m·Ω)
熱導率(lv):116W/(m·K)
莫(mo)氏硬度(du):2.5
汽(qi)化熱:115.3kJ/mol
熔(rong)化熱:7.322kJ/mol
蒸氣(qi)壓:192.2Pa(692.73K)
鋅的(de)化(hua)學性(xing)(xing)質與鋁(lv)相似(si),所以,通常可以由鋁(lv)的(de)性(xing)(xing)質,推(tui)斷(duan)鋅的(de)化(hua)學性(xing)(xing)質(兩性(xing)(xing))。
①單質鋅,即可與(yu)(yu)酸反應,又(you)可與(yu)(yu)堿反應。
②氧(yang)化鋅和氫氧(yang)化鋅,既可溶于酸,又可溶于堿。
單質鋅
氫氧化鋅
氯化鋅
硫化鋅
硝酸鋅
鋅的配合物
鋅被羅馬(ma)人(ren)所知,但(dan)很(hen)少使(shi)用。它第一(yi)次以其金(jin)屬自身(shen)被認可(ke)是(shi)在印度,在拉賈(jia)斯坦邦的Zawar有一(yi)個鋅熔爐有大量的鋅,證明了大規模的精煉在1100年到(dao)1500年。
鋅的(de)大規模精煉在中國(guo)進行(xing),于16世紀。東(dong)印(yin)度公(gong)司(si)的(de)船在瑞典的(de)海岸沉沒,于1745年,其運載的(de)貨(huo)物是中國(guo)的(de)鋅,分析(xi)了回(hui)收的(de)鑄錠證明了它們是幾乎(hu)純凈的(de)金屬(shu)。
在1668年,佛蘭德(de)的(de)冶金(jin)(jin)家P.Moras de Respour,從(cong)氧化鋅(xin)中提取了金(jin)(jin)屬(shu)鋅(xin),但歐(ou)洲認為鋅(xin)是由德(de)國(guo)化學家Andreas Marggraf在1746年發現的(de),而(er)且的(de)確是他第一個確認了其是一種新(xin)的(de)金(jin)(jin)屬(shu)。
鋅(xin)(xin)也是人類自遠古時就知道其(qi)化合物的(de)元(yuan)素之一(yi)。鋅(xin)(xin)礦(kuang)石和銅(tong)(tong)熔(rong)化制得合金——黃銅(tong)(tong),早為古代人們(men)所(suo)利用。但金屬狀(zhuang)鋅(xin)(xin)的(de)獲得比(bi)銅(tong)(tong)、鐵(tie)、錫(xi)、鉛要晚得多,一(yi)般認(ren)為這(zhe)是由于碳和鋅(xin)(xin)礦(kuang)共熱時,溫度很快高達1000℃以上,而金屬鋅(xin)(xin)的(de)沸點(dian)是906℃,故鋅(xin)(xin)即(ji)成為蒸氣狀(zhuang)態,隨(sui)煙散失(shi),不易為古代人們(men)所(suo)察(cha)覺,只有當人們(men)掌握了冷(leng)凝氣體的(de)方法后(hou),單質鋅(xin)(xin)才有可(ke)能被取得。
世(shi)界上最早發現并(bing)使用(yong)鋅(xin)的(de)(de)是中國(guo),在10~11世(shi)紀中國(guo)是首先(xian)大規模(mo)生產(chan)鋅(xin)的(de)(de)國(guo)家。明(ming)朝末年宋(song)應星(xing)所著的(de)(de)《天工開(kai)物(wu)》一書(shu)中有世(shi)界上最早的(de)(de)關(guan)于(yu)煉鋅(xin)技術(shu)的(de)(de)記載。1750~1850年人們已開(kai)始用(yong)氧化鋅(xin)和(he)硫化鋅(xin)來治病。
1869年Raulin發現鋅存在(zai)(zai)于生(sheng)(sheng)(sheng)活(huo)機(ji)(ji)體中,并(bing)為生(sheng)(sheng)(sheng)活(huo)機(ji)(ji)體所必需。1963年報告了人(ren)體的(de)鋅缺乏病(bing),于是鋅開始列為人(ren)體必需營養素。鋅的(de)生(sheng)(sheng)(sheng)產(chan)過(guo)程非常簡單,將爐甘石(即菱(ling)鋅礦石)裝滿在(zai)(zai)陶罐內密封,堆成錐(zhui)形,罐與罐之間的(de)空(kong)隙用(yong)木炭填充,將罐打破,就可以得到提取出來的(de)金屬鋅錠。
另外(wai),我(wo)國(guo)化學史和(he)分(fen)析化學研究的開拓者王鏈(lian)(1888—1966)在(zai)1956年分(fen)析了唐(tang)、隋、明(ming)、清等古錢(qian)(qian)后,發(fa)現宋朝的紹圣錢(qian)(qian)中含鋅量高。鋅的實際應用可能比《天(tian)工開物》成書年代還早。
鋅(xin)(xin)(xin)(xin)的(de)(de)(de)單一鋅(xin)(xin)(xin)(xin)礦(kuang)(kuang)(kuang)(kuang)較少(shao),鋅(xin)(xin)(xin)(xin)礦(kuang)(kuang)(kuang)(kuang)資源主要是鉛鋅(xin)(xin)(xin)(xin)礦(kuang)(kuang)(kuang)(kuang)。中國(guo)(guo)銅鋅(xin)(xin)(xin)(xin)礦(kuang)(kuang)(kuang)(kuang)資源比較豐(feng)富(fu),全(quan)(quan)(quan)國(guo)(guo)除上(shang)海、天(tian)津、香港外,均(jun)有(you)(you)鉛鋅(xin)(xin)(xin)(xin)礦(kuang)(kuang)(kuang)(kuang)產出。產地(di)(di)(di)(di)有(you)(you)700多處,保(bao)有(you)(you)鉛總儲(chu)(chu)(chu)量(liang)3572萬(wan)噸,居(ju)世界第4位(wei)(wei);鋅(xin)(xin)(xin)(xin)儲(chu)(chu)(chu)量(liang)9384萬(wan)噸,居(ju)世界第4位(wei)(wei)。從省際比較來看,云南(nan)(nan)鉛儲(chu)(chu)(chu)量(liang)占(zhan)全(quan)(quan)(quan)國(guo)(guo)總儲(chu)(chu)(chu)量(liang)17%,位(wei)(wei)居(ju)全(quan)(quan)(quan)國(guo)(guo)榜首。廣(guang)東(dong)(dong)、內蒙(meng)古(gu)(gu)、甘(gan)(gan)肅、江西、湖南(nan)(nan)、四川(chuan)次之,探明儲(chu)(chu)(chu)量(liang)均(jun)在200萬(wan)噸以(yi)(yi)上(shang)。全(quan)(quan)(quan)國(guo)(guo)鋅(xin)(xin)(xin)(xin)儲(chu)(chu)(chu)量(liang)以(yi)(yi)云南(nan)(nan)為最,占(zhan)全(quan)(quan)(quan)國(guo)(guo)21.8%;內蒙(meng)古(gu)(gu)次之,占(zhan)13.5%;其他(ta)如(ru)甘(gan)(gan)肅、廣(guang)東(dong)(dong)、廣(guang)西、湖南(nan)(nan)等省(區)的(de)(de)(de)鋅(xin)(xin)(xin)(xin)礦(kuang)(kuang)(kuang)(kuang)資源也較豐(feng)富(fu),均(jun)在600萬(wan)噸以(yi)(yi)上(shang)。鉛鋅(xin)(xin)(xin)(xin)礦(kuang)(kuang)(kuang)(kuang)主要分布在滇西蘭坪地(di)(di)(di)(di)區、滇川(chuan)地(di)(di)(di)(di)區、南(nan)(nan)嶺(ling)地(di)(di)(di)(di)區、秦嶺(ling)-祁連山(shan)地(di)(di)(di)(di)區以(yi)(yi)及(ji)內蒙(meng)古(gu)(gu)狼山(shan)-渣爾泰地(di)(di)(di)(di)區。從礦(kuang)(kuang)(kuang)(kuang)床類型來看,有(you)(you)與(yu)花崗巖(yan)有(you)(you)關的(de)(de)(de)花崗巖(yan)型(廣(guang)東(dong)(dong)連平)、夕卡巖(yan)型(湖南(nan)(nan)水口山(shan))、斑巖(yan)型(云南(nan)(nan)姚安)礦(kuang)(kuang)(kuang)(kuang)床,有(you)(you)與(yu)海相火(huo)山(shan)有(you)(you)關的(de)(de)(de)礦(kuang)(kuang)(kuang)(kuang)床(青海錫鐵山(shan)),有(you)(you)產于陸相火(huo)山(shan)巖(yan)中的(de)(de)(de)礦(kuang)(kuang)(kuang)(kuang)床(江西冷水坑(keng)和浙(zhe)江五部鉛鋅(xin)(xin)(xin)(xin)礦(kuang)(kuang)(kuang)(kuang)),有(you)(you)產于海相碳(tan)酸鹽(廣(guang)東(dong)(dong)凡(fan)口)、泥巖(yan)-碎(sui)屑巖(yan)系中的(de)(de)(de)鉛鋅(xin)(xin)(xin)(xin)礦(kuang)(kuang)(kuang)(kuang)(甘(gan)(gan)肅西成鉛鋅(xin)(xin)(xin)(xin)礦(kuang)(kuang)(kuang)(kuang)),有(you)(you)產于海相或陸相砂巖(yan)和礫巖(yan)中的(de)(de)(de)鉛鋅(xin)(xin)(xin)(xin)礦(kuang)(kuang)(kuang)(kuang)(云南(nan)(nan)金(jin)頂)等。鉛鋅(xin)(xin)(xin)(xin)礦(kuang)(kuang)(kuang)(kuang)成礦(kuang)(kuang)(kuang)(kuang)時(shi)代(dai)從太古(gu)(gu)宙到新生(sheng)代(dai)皆有(you)(you),以(yi)(yi)古(gu)(gu)生(sheng)代(dai)鉛鋅(xin)(xin)(xin)(xin)礦(kuang)(kuang)(kuang)(kuang)資源力量(liang)豐(feng)富(fu)。
金融(rong)危機之后(hou)各(ge)國(guo)紛(fen)紛(fen)推(tui)出救市(shi)(shi)計劃,各(ge)大央行(xing)也(ye)陸(lu)續(xu)釋放流(liu)動(dong)性,美(mei)(mei)國(guo)持續(xu)量寬、中國(guo)推(tui)出四萬億以促使(shi)經(jing)(jing)濟復(fu)蘇(su),充裕的流(liu)動(dong)性使(shi)得金融(rong)屬(shu)性占據(ju)主要地位推(tui)升2010年(nian)鋅(xin)(xin)價(jia)不(bu)斷走(zou)高。《2013-2017年(nian)中國(guo)鋅(xin)(xin)行(xing)業(ye)競爭態勢(shi)及(ji)投資發(fa)展預(yu)測報(bao)告(gao)》,全球經(jing)(jing)濟趨于穩定(ding),美(mei)(mei)國(guo)緩慢復(fu)蘇(su),市(shi)(shi)場上關于QE3退出的預(yu)期逐漸增強,倘若美(mei)(mei)國(guo)經(jing)(jing)濟政策(ce)發(fa)生改變,美(mei)(mei)元將會(hui)走(zou)強,鋅(xin)(xin)價(jia)受其(qi)影響(xiang)較(jiao)大。但同(tong)時(shi)值得注意的是,經(jing)(jing)濟復(fu)蘇(su)也(ye)在(zai)一定(ding)程度上帶來(lai)需求恢復(fu),兩種屬(shu)性的博弈(yi)將共(gong)同(tong)決定(ding)鋅(xin)(xin)價(jia)未(wei)來(lai)走(zou)勢(shi)。
美(mei)國金(jin)融危機后通過持續寬(kuan)松的(de)(de)貨幣(bi)政(zheng)策促(cu)進經濟和(he)就業(ye)增長(chang),盡管貨幣(bi)寬(kuan)松政(zheng)策的(de)(de)邊(bian)際效(xiao)用遞減,但(dan)可以看到的(de)(de)是,美(mei)國GDP增速的(de)(de)低速增長(chang)和(he)就業(ye)市(shi)場(chang)的(de)(de)緩慢(man)好(hao)轉表明,美(mei)國經濟正在弱勢(shi)(shi)復蘇。美(mei)國經濟復蘇以及房地產(chan)市(shi)場(chang)的(de)(de)回(hui)暖帶動對鋅的(de)(de)需(xu)求(qiu)上升,但(dan)這種弱勢(shi)(shi)復蘇態勢(shi)(shi)仍比較脆弱,對鋅需(xu)求(qiu)帶動也有(you)限。
等級 Zn(%) Cu(%) Pb(%) Fe(%)
1 ≥55 ≤0.8 ≤1.0 ≤6.0
2 ≥53 ≤0.8 ≤1.0 ≤6.0
3 ≥50 ≤1.0 ≤1.5 ≤8.0
4 ≥48 ≤1.0 ≤1.5 ≤12.0
5 ≥45 ≤1.5 ≤2.0 ≤12.0
6 ≥43 ≤1.5 ≤2.0 ≤12.0
7 ≥2.0 ≤2.5 ≤14.0
8 ≥40 ≤2.0 ≤2.8 ≤18.0
世界上鋅(xin)(xin)(xin)(xin)的全部(bu)消費(fei)(fei)中(zhong)大約(yue)(yue)有(you)一半用(yong)于(yu)(yu)(yu)鍍(du)鋅(xin)(xin)(xin)(xin),約(yue)(yue)10%用(yong)于(yu)(yu)(yu)黃(huang)銅和青銅,不到(dao)10%用(yong)于(yu)(yu)(yu)鋅(xin)(xin)(xin)(xin)基合金,約(yue)(yue)7.5%用(yong)于(yu)(yu)(yu)化(hua)學制品,約(yue)(yue)13%用(yong)于(yu)(yu)(yu)制造干電池,以鋅(xin)(xin)(xin)(xin)餅、鋅(xin)(xin)(xin)(xin)板形式出現。國際鉛鋅(xin)(xin)(xin)(xin)研究組預測(ce),2004年(nian)(nian)(nian)全球(qiu)鋅(xin)(xin)(xin)(xin)消費(fei)(fei)量會比2003年(nian)(nian)(nian)的985萬t增(zeng)長4.8%,2005年(nian)(nian)(nian)將再增(zeng)長4.3%,預計(ji)2005年(nian)(nian)(nian)中(zhong)國將占(zhan)世界鋅(xin)(xin)(xin)(xin)消費(fei)(fei)總(zong)量的四分之(zhi)(zhi)一,它的消費(fei)(fei)增(zeng)長的部(bu)分原因是鍍(du)鋅(xin)(xin)(xin)(xin)鋼用(yong)量的增(zeng)長。相比之(zhi)(zhi)下,美國可能(neng)只占(zhan)全球(qiu)鋅(xin)(xin)(xin)(xin)需求的十分之(zhi)(zhi)一。
(1)鍍(du)鋅(xin)(xin)(xin)(xin)有優(you)良的(de)抗大(da)氣腐(fu)蝕性能,在常(chang)溫下表面易生成一(yi)層保(bao)護膜,因此鋅(xin)(xin)(xin)(xin)最大(da)的(de)用(yong)(yong)(yong)(yong)(yong)(yong)(yong)途是用(yong)(yong)(yong)(yong)(yong)(yong)(yong)于鍍(du)鋅(xin)(xin)(xin)(xin)工(gong)業。被主要用(yong)(yong)(yong)(yong)(yong)(yong)(yong)于鋼(gang)材和(he)鋼(gang)結(jie)構(gou)件的(de)表面鍍(du)層(如(ru)鍍(du)鋅(xin)(xin)(xin)(xin)板(ban)),廣(guang)泛(fan)用(yong)(yong)(yong)(yong)(yong)(yong)(yong)于汽車、建筑、船舶、輕工(gong)等行業。21世紀(ji)后(hou)西方國(guo)家開始嘗試(shi)直(zhi)接用(yong)(yong)(yong)(yong)(yong)(yong)(yong)鋅(xin)(xin)(xin)(xin)合金板(ban)做屋頂覆蓋材料(liao)(liao),其使用(yong)(yong)(yong)(yong)(yong)(yong)(yong)年(nian)限可(ke)長達(da)120-140年(nian),而且可(ke)回收(shou)再用(yong)(yong)(yong)(yong)(yong)(yong)(yong),而用(yong)(yong)(yong)(yong)(yong)(yong)(yong)鍍(du)鋅(xin)(xin)(xin)(xin)鐵板(ban)作(zuo)屋頂材料(liao)(liao)的(de)使用(yong)(yong)(yong)(yong)(yong)(yong)(yong)壽命一(yi)般為5-10年(nian)。21世紀(ji)后(hou),鋼(gang)帶熱浸鍍(du)鋅(xin)(xin)(xin)(xin)量有顯(xian)著增長。電鍍(du)鋅(xin)(xin)(xin)(xin)也有使用(yong)(yong)(yong)(yong)(yong)(yong)(yong),但該法一(yi)般用(yong)(yong)(yong)(yong)(yong)(yong)(yong)于較薄的(de)鍍(du)層和(he)不(bu)同的(de)表面光潔度。使用(yong)(yong)(yong)(yong)(yong)(yong)(yong)含鋅(xin)(xin)(xin)(xin)粉的(de)涂(tu)料(liao)(liao)是涂(tu)層的(de)另一(yi)種方法;對于與水(shui)連(lian)續接觸的(de)物體,如(ru)用(yong)(yong)(yong)(yong)(yong)(yong)(yong)于船舶、橋梁和(he)近海油氣井架(jia)的(de)大(da)的(de)鋼(gang)構(gou)件,只須和(he)大(da)的(de)鋅(xin)(xin)(xin)(xin)塊(kuai)(kuai)連(lian)接,便(bian)可(ke)得(de)到(dao)保(bao)護,不(bu)過鋅(xin)(xin)(xin)(xin)塊(kuai)(kuai)要定(ding)期更換(huan)。
(2)鋅(xin)合(he)金用(yong)(yong)于(yu)汽車(che)制(zhi)造和機(ji)械行(xing)業。鋅(xin)具有(you)適用(yong)(yong)的機(ji)械性(xing)(xing)(xing)能。鋅(xin)本身(shen)的強度(du)(du)和硬度(du)(du)不高,但加入(ru)鋁(lv)、銅等(deng)合(he)金元素(su)后,其強度(du)(du)和硬度(du)(du)均(jun)大為(wei)提高,猶其是鋅(xin)銅鈦合(he)金的出現(xian),其綜合(he)機(ji)械性(xing)(xing)(xing)能已接(jie)(jie)近(jin)或(huo)達到鋁(lv)合(he)金、黃銅、灰鑄(zhu)(zhu)鐵的水平(ping),其抗蠕變性(xing)(xing)(xing)能也(ye)大幅度(du)(du)被提高。因此,鋅(xin)銅鈦合(he)金已被廣泛(fan)應用(yong)(yong)于(yu)小五金生產中。主要(yao)為(wei)壓(ya)鑄(zhu)(zhu)件(jian),用(yong)(yong)于(yu)汽車(che)、建筑、部分(fen)電(dian)氣設備、家用(yong)(yong)電(dian)器(qi)、玩具等(deng)的零部件(jian)生產。許多鋅(xin)合(he)金的加工性(xing)(xing)(xing)能都比(bi)較優(you)良,道次加工率可達60%-80%。中壓(ya)性(xing)(xing)(xing)能優(you)越(yue),可進行(xing)深拉延(yan),并具有(you)自(zi)潤滑性(xing)(xing)(xing),延(yan)長了(le)模具壽命,可用(yong)(yong)釬焊(han)(han)或(huo)電(dian)阻焊(han)(han)或(huo)電(dian)弧(hu)焊(han)(han)(需在氦氣中)進行(xing)焊(han)(han)接(jie)(jie),表面可進行(xing)電(dian)鍍、涂漆處理,切削加工性(xing)(xing)(xing)能良好。在一定條件(jian)下具有(you)優(you)越(yue)性(xing)(xing)(xing)。一般(ban)用(yong)(yong)于(yu)機(ji)械制(zhi)造業。含少(shao)量(liang)鉛鎘等(deng)元素(su)的鋅(xin)板(ban)可制(zhi)成鋅(xin)錳干電(dian)池負極、印花鋅(xin)板(ban)、有(you)粉腐蝕(shi)照相制(zhi)板(ban)和膠印印刷板(ban)等(deng)。
(3)鋅可以用來制作電池(chi)。例如:鋅錳電池(chi)以及鋅空氣蓄電池(chi)。
鋅(xin)(xin)錳(meng)電(dian)(dian)(dian)(dian)池:鋅(xin)(xin)作為負極活性(xing)物質,兼作電(dian)(dian)(dian)(dian)池的(de)(de)(de)容器和負極引電(dian)(dian)(dian)(dian)體,是(shi)決定電(dian)(dian)(dian)(dian)池貯存性(xing)能(neng)的(de)(de)(de)主要材(cai)料。在(zai)(zai)鋅(xin)(xin)片(pian)中(zhong)(zhong)含有(you)少量的(de)(de)(de)鎘和鉛(qian)(qian)。鎘能(neng)增強鋅(xin)(xin)的(de)(de)(de)強度,鉛(qian)(qian)能(neng)改進鋅(xin)(xin)的(de)(de)(de)延展加(jia)工性(xing)能(neng)。鎘與鉛(qian)(qian)均能(neng)提(ti)高(gao)氫(qing)在(zai)(zai)鋅(xin)(xin)電(dian)(dian)(dian)(dian)極上(shang)的(de)(de)(de)過電(dian)(dian)(dian)(dian)位,減少鋅(xin)(xin)電(dian)(dian)(dian)(dian)極的(de)(de)(de)自放(fang)電(dian)(dian)(dian)(dian),減緩(huan)鋅(xin)(xin)片(pian)的(de)(de)(de)腐(fu)蝕和氫(qing)氣的(de)(de)(de)釋放(fang)。鋅(xin)(xin)片(pian)中(zhong)(zhong)若含有(you)Cu、Fe、Ni等,將降低H2在(zai)(zai)鋅(xin)(xin)電(dian)(dian)(dian)(dian)極上(shang)析出(chu)的(de)(de)(de)過電(dian)(dian)(dian)(dian)位,加(jia)速電(dian)(dian)(dian)(dian)池在(zai)(zai)貯存過程(cheng)中(zhong)(zhong)的(de)(de)(de)自放(fang)電(dian)(dian)(dian)(dian),因此這些有(you)害雜質必須(xu)嚴格控制。
鋅(xin)(xin)(xin)(xin)空(kong)氣(qi)蓄電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)池(chi)(chi):鋅(xin)(xin)(xin)(xin)空(kong)氣(qi)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)池(chi)(chi)又稱鋅(xin)(xin)(xin)(xin)氧(yang)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)池(chi)(chi),是(shi)金屬空(kong)氣(qi)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)池(chi)(chi)的(de)一(yi)種。鋅(xin)(xin)(xin)(xin)空(kong)氣(qi)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)池(chi)(chi)比(bi)(bi)能(neng)理論(lun)值是(shi)1350W·h/kg,最(zui)新的(de)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)池(chi)(chi)比(bi)(bi)能(neng)量(liang)(liang)已達(da)到了230Wh/kg,幾乎是(shi)鉛酸(suan)(suan)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)池(chi)(chi)的(de)8倍。可見鋅(xin)(xin)(xin)(xin)空(kong)氣(qi)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)池(chi)(chi)的(de)發展空(kong)間(jian)非常大。鋅(xin)(xin)(xin)(xin)空(kong)氣(qi)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)池(chi)(chi)一(yi)般采取抽換(huan)鋅(xin)(xin)(xin)(xin)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)極的(de)辦(ban)法進行“機械(xie)式充(chong)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)”。更換(huan)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)極的(de)時間(jian)在(zai)幾分鐘即(ji)可完成。換(huan)上新的(de)鋅(xin)(xin)(xin)(xin)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)極,“充(chong)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)”時間(jian)極短,非常方便。如(ru)此(ci)種電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)池(chi)(chi)得(de)到發展,省去了充(chong)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)站等(deng)社會(hui)保(bao)障設施(shi)的(de)興(xing)建。鋅(xin)(xin)(xin)(xin)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)極可在(zai)超市、電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)池(chi)(chi)經(jing)營點、汽配商店等(deng)購買,對普及此(ci)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)池(chi)(chi)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)動車(che)(che)(che)十分有(you)(you)(you)利。這種電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)池(chi)(chi)具有(you)(you)(you)體積小,電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)荷容量(liang)(liang)大,質量(liang)(liang)小,能(neng)在(zai)寬廣的(de)溫(wen)度(du)范(fan)圍內(nei)正常工作(zuo),且無(wu)腐蝕(shi),工作(zuo)安全可靠。只是(shi)鋅(xin)(xin)(xin)(xin)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)極在(zai)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)解還原(yuan)過程中,比(bi)(bi)較(jiao)耗能(neng),每(mei)噸氧(yang)化鋅(xin)(xin)(xin)(xin)還原(yuan)成鋅(xin)(xin)(xin)(xin)需要(yao)消耗2500度(du)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian),所以(yi)用(yong)在(zai)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)動汽車(che)(che)(che)上,成本(ben)較(jiao)高。試(shi)驗電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)池(chi)(chi)的(de)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)荷容量(liang)(liang)僅是(shi)鉛酸(suan)(suan)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)池(chi)(chi)的(de)5倍,不甚(shen)理想。但5倍于鉛酸(suan)(suan)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)池(chi)(chi)的(de)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)荷量(liang)(liang)已引起了世(shi)人的(de)關注,美(mei)國、墨西哥,新加坡(po)及一(yi)些歐洲國家(jia)都(dou)已在(zai)郵政車(che)(che)(che)、公共汽車(che)(che)(che)、摩托車(che)(che)(che)上進行試(shi)用(yong),也是(shi)一(yi)極有(you)(you)(you)前途的(de)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)動車(che)(che)(che)用(yong)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)池(chi)(chi)。
此外(wai),鋅(xin)(xin)(xin)(xin)具有(you)良好的(de)(de)(de)(de)抗電(dian)(dian)磁(ci)(ci)場(chang)性(xing)能(neng)。鋅(xin)(xin)(xin)(xin)的(de)(de)(de)(de)導(dao)電(dian)(dian)率是(shi)標準電(dian)(dian)工銅的(de)(de)(de)(de)29%,鋅(xin)(xin)(xin)(xin)板是(shi)一種非常有(you)效的(de)(de)(de)(de)屏(ping)蔽材料(liao)(liao),同(tong)時由(you)于鋅(xin)(xin)(xin)(xin)是(shi)非磁(ci)(ci)性(xing)的(de)(de)(de)(de),適合做儀器儀表零件的(de)(de)(de)(de)材料(liao)(liao)及儀表殼體及錢(qian)幣,同(tong)時,鋅(xin)(xin)(xin)(xin)自身(shen)及與其他金屬碰撞不會(hui)發生火(huo)花,適合作(zuo)井下(xia)防爆器材。廣泛用(yong)(yong)于橡(xiang)膠、涂料(liao)(liao)、搪瓷(ci)、醫(yi)藥、印(yin)刷、纖維等(deng)工業(ye)。鋅(xin)(xin)(xin)(xin)具有(you)適宜的(de)(de)(de)(de)化(hua)學性(xing)能(neng)。鋅(xin)(xin)(xin)(xin)可(ke)與NH4CI發生作(zuo)用(yong)(yong),放出H+正離(li)子。鋅(xin)(xin)(xin)(xin)-二氧(yang)(yang)化(hua)錳電(dian)(dian)池正是(shi)利用(yong)(yong)鋅(xin)(xin)(xin)(xin)的(de)(de)(de)(de)這個(ge)特點,用(yong)(yong)鋅(xin)(xin)(xin)(xin)合金做電(dian)(dian)池的(de)(de)(de)(de)外(wai)殼,既是(shi)電(dian)(dian)池電(dian)(dian)解質的(de)(de)(de)(de)容(rong)器,又參(can)加(jia)電(dian)(dian)池反(fan)應構成電(dian)(dian)池的(de)(de)(de)(de)陽(yang)極。它的(de)(de)(de)(de)這一性(xing)能(neng)也被廣泛地(di)應用(yong)(yong)于醫(yi)藥行(xing)業(ye)。鋅(xin)(xin)(xin)(xin)與酸或強堿都能(neng)發生反(fan)應,放出氫(qing)氣。鋅(xin)(xin)(xin)(xin)肥(fei)(硫酸鋅(xin)(xin)(xin)(xin)、氯化(hua)鋅(xin)(xin)(xin)(xin))有(you)促進植(zhi)物(wu)細胞呼吸(xi)、碳水(shui)化(hua)合物(wu)的(de)(de)(de)(de)代(dai)謝等(deng)作(zuo)用(yong)(yong)。鋅(xin)(xin)(xin)(xin)粉、鋅(xin)(xin)(xin)(xin)鋇白、鋅(xin)(xin)(xin)(xin)鉻黃(huang)可(ke)作(zuo)顏料(liao)(liao)。氧(yang)(yang)化(hua)鋅(xin)(xin)(xin)(xin)還(huan)可(ke)用(yong)(yong)于醫(yi)藥、橡(xiang)膠、油漆等(deng)工業(ye)。
中國(guo)(guo)鉛鋅(xin)業生產(chan)(chan)布局,依據鉛鋅(xin)礦產(chan)(chan)地(di)的(de)分布和(he)建設條件,經40多年來的(de)發展(zhan)、建設,現已形成東北、湖南、兩廣、滇川(chuan)、西(xi)北等(deng)五大鉛鋅(xin)采選冶(ye)和(he)加工配套的(de)生產(chan)(chan)基地(di),其鉛產(chan)(chan)量(liang)占(zhan)全(quan)國(guo)(guo)總(zong)產(chan)(chan)量(liang)的(de)85%以(yi)上,鋅(xin)產(chan)(chan)量(liang)占(zhan)全(quan)國(guo)(guo)總(zong)產(chan)(chan)量(liang)的(de)95%。
1.東北(bei)(bei)鉛(qian)(qian)鋅(xin)(xin)(xin)生(sheng)(sheng)產(chan)基(ji)地(di)。東北(bei)(bei)地(di)區是(shi)我國(guo)開發較(jiao)早(zao)的(de)鉛(qian)(qian)鋅(xin)(xin)(xin)生(sheng)(sheng)產(chan)基(ji)地(di)之一。早(zao)在50年(nian)代初期,其鉛(qian)(qian)產(chan)量占全國(guo)鉛(qian)(qian)產(chan)量的(de)80%以(yi)(yi)上(shang),在中(zhong)國(guo)鉛(qian)(qian)鋅(xin)(xin)(xin)生(sheng)(sheng)產(chan)居于重要地(di)位。東北(bei)(bei)基(ji)地(di)以(yi)(yi)七礦(kuang)(kuang)(kuang)(kuang)兩廠(chang)為主,即青城子鉛(qian)(qian)鋅(xin)(xin)(xin)礦(kuang)(kuang)(kuang)(kuang)、八(ba)家子鉛(qian)(qian)鋅(xin)(xin)(xin)礦(kuang)(kuang)(kuang)(kuang)、柴河鉛(qian)(qian)鋅(xin)(xin)(xin)礦(kuang)(kuang)(kuang)(kuang)(現已閉(bi)坑)、桓仁銅(tong)鋅(xin)(xin)(xin)礦(kuang)(kuang)(kuang)(kuang)、紅透(tou)山(shan)銅(tong)鋅(xin)(xin)(xin)礦(kuang)(kuang)(kuang)(kuang)、西(xi)林鉛(qian)(qian)鋅(xin)(xin)(xin)礦(kuang)(kuang)(kuang)(kuang)、天(tian)寶(bao)山(shan)鉛(qian)(qian)鋅(xin)(xin)(xin)礦(kuang)(kuang)(kuang)(kuang)和沈陽(yang)冶煉(lian)廠(chang)、葫蘆島鋅(xin)(xin)(xin)廠(chang)。七礦(kuang)(kuang)(kuang)(kuang)兩廠(chang)不僅(jin)是(shi)東北(bei)(bei)鉛(qian)(qian)鋅(xin)(xin)(xin)生(sheng)(sheng)產(chan)基(ji)地(di)的(de)支柱(zhu)廠(chang)礦(kuang)(kuang)(kuang)(kuang),也是(shi)培(pei)養造就科技(ji)(ji)人(ren)才(cai)的(de)基(ji)地(di)。六(liu)七十年(nian)代曾(ceng)向全國(guo)新建的(de)鉛(qian)(qian)鋅(xin)(xin)(xin)企業輸送(song)大批具有(you)實踐經(jing)驗(yan)的(de)科技(ji)(ji)和管理人(ren)才(cai)以(yi)(yi)及生(sheng)(sheng)產(chan)技(ji)(ji)術工人(ren),為中(zhong)國(guo)鉛(qian)(qian)鋅(xin)(xin)(xin)業的(de)發展做出了積極貢獻(xian)。
2.湖(hu)南(nan)鉛(qian)(qian)鋅(xin)(xin)生(sheng)產(chan)基(ji)(ji)地(di)。湖(hu)南(nan)鉛(qian)(qian)鋅(xin)(xin)礦(kuang)產(chan)資(zi)源豐(feng)富,而且(qie)富礦(kuang)多(duo),大部(bu)分礦(kuang)產(chan)地(di)可開發利用。該基(ji)(ji)地(di)鉛(qian)(qian)鋅(xin)(xin)廠礦(kuang)是五六十年代(dai)建成的,由水口山礦(kuang)務局、桃(tao)林(lin)鉛(qian)(qian)鋅(xin)(xin)礦(kuang)、黃沙坪鉛(qian)(qian)鋅(xin)(xin)礦(kuang)、東(dong)坡鉛(qian)(qian)鋅(xin)(xin)礦(kuang)和株洲(zhou)冶煉廠等組成的湖(hu)南(nan)鉛(qian)(qian)鋅(xin)(xin)生(sheng)產(chan)基(ji)(ji)地(di),是全國自(zi)產(chan)原料的全國最大的鉛(qian)(qian)鋅(xin)(xin)生(sheng)產(chan)基(ji)(ji)地(di),在全國產(chan)量占(zhan)有重要(yao)地(di)位。
3.兩廣(guang)鉛(qian)(qian)(qian)(qian)鋅(xin)(xin)(xin)生產(chan)基(ji)地(di)。廣(guang)東(dong)、廣(guang)西(xi)兩省區的(de)鉛(qian)(qian)(qian)(qian)鋅(xin)(xin)(xin)資(zi)源豐富,兩省區是70年(nian)代形成的(de)我國大(da)(da)型鉛(qian)(qian)(qian)(qian)鋅(xin)(xin)(xin)生產(chan)基(ji)地(di)之一(yi)。廣(guang)東(dong)以凡口(kou)鉛(qian)(qian)(qian)(qian)鋅(xin)(xin)(xin)礦(kuang)(kuang)和韶關冶煉廠為(wei)主,其次(ci)是丙(bing)村鉛(qian)(qian)(qian)(qian)鋅(xin)(xin)(xin)礦(kuang)(kuang)、昌化鉛(qian)(qian)(qian)(qian)鋅(xin)(xin)(xin)礦(kuang)(kuang)、大(da)(da)尖山鉛(qian)(qian)(qian)(qian)鋅(xin)(xin)(xin)礦(kuang)(kuang)。廣(guang)西(xi)有泗頂鉛(qian)(qian)(qian)(qian)鋅(xin)(xin)(xin)礦(kuang)(kuang)、大(da)(da)新(xin)鉛(qian)(qian)(qian)(qian)鋅(xin)(xin)(xin)礦(kuang)(kuang)、河(he)三鉛(qian)(qian)(qian)(qian)鋅(xin)(xin)(xin)礦(kuang)(kuang)、柳州鋅(xin)(xin)(xin)品廠和大(da)(da)廠礦(kuang)(kuang)務局(ju)等。
4.滇川鉛鋅(xin)(xin)生產(chan)(chan)基地(di)。云(yun)(yun)南鉛鋅(xin)(xin)礦(kuang)(kuang)產(chan)(chan)資(zi)源十分豐富(fu),鉛鋅(xin)(xin)保有儲(chu)量(liang)均居全國之首。該基地(di)鉛鋅(xin)(xin)企業也是(shi)五六十年代建成的,主(zhu)要是(shi)會澤(ze)鉛鋅(xin)(xin)礦(kuang)(kuang)、瀾滄老廠鉛鋅(xin)(xin)礦(kuang)(kuang)和(he)昆明冶(ye)煉(lian)廠、個(ge)舊雞街冶(ye)煉(lian)廠。云(yun)(yun)南鉛鋅(xin)(xin)礦(kuang)(kuang)產(chan)(chan)資(zi)源具有廣闊的開(kai)發前景(jing),90年代開(kai)始興建超大(da)型鉛鋅(xin)(xin)礦(kuang)(kuang)床金頂礦(kuang)(kuang)山(shan)。四川有會東鉛鋅(xin)(xin)礦(kuang)(kuang)、會理鉛鋅(xin)(xin)礦(kuang)(kuang)兩個(ge)主(zhu)要礦(kuang)(kuang)山(shan)以(yi)(yi)及一批中小型礦(kuang)(kuang)山(shan),21世(shi)紀以(yi)(yi)來鉛鋅(xin)(xin)精礦(kuang)(kuang)產(chan)(chan)量(liang)猛(meng)增。
5.西(xi)北(bei)(bei)鉛鋅(xin)(xin)(xin)生產基(ji)地(di)。西(xi)北(bei)(bei)地(di)區鉛鋅(xin)(xin)(xin)礦(kuang)(kuang)(kuang)產資源也很豐富,主要分布在甘(gan)陜(shan)青三(san)省,而且西(xi)成(cheng)礦(kuang)(kuang)(kuang)帶(dai)經勘(kan)(kan)查儲量又(you)有(you)大(da)(da)(da)幅度的增長,資源前景(jing)十分可(ke)觀(guan)。該基(ji)地(di)鉛鋅(xin)(xin)(xin)生產以(yi)白(bai)(bai)銀(yin)有(you)色金屬公司為(wei)主,有(you)白(bai)(bai)銀(yin)廠(chang)(chang)小鐵(tie)山鉛鋅(xin)(xin)(xin)礦(kuang)(kuang)(kuang)、第(di)三(san)冶煉廠(chang)(chang)和西(xi)北(bei)(bei)鉛鋅(xin)(xin)(xin)冶煉廠(chang)(chang),陜(shan)西(xi)有(you)鉛硐(dong)山鉛鋅(xin)(xin)(xin)礦(kuang)(kuang)(kuang)、二里河鉛鋅(xin)(xin)(xin)礦(kuang)(kuang)(kuang)、銀(yin)洞梁鉛鋅(xin)(xin)(xin)礦(kuang)(kuang)(kuang)等(deng)和青海錫鐵(tie)山礦(kuang)(kuang)(kuang)務局(ju)。西(xi)北(bei)(bei)鉛鋅(xin)(xin)(xin)產量較少,但開(kai)發前景(jing)可(ke)觀(guan)。一是有(you)豐富的鉛鋅(xin)(xin)(xin)礦(kuang)(kuang)(kuang)產資源,位于甘(gan)陜(shan)交界的西(xi)成(cheng)-鳳(feng)太礦(kuang)(kuang)(kuang)帶(dai),經近20余年勘(kan)(kan)查出(chu)10多個大(da)(da)(da)中型(xing)(xing)鉛鋅(xin)(xin)(xin)銀(yin)金礦(kuang)(kuang)(kuang)床,其中廠(chang)(chang)壩(ba)-李家溝鉛鋅(xin)(xin)(xin)達到超大(da)(da)(da)型(xing)(xing)規模,銀(yin)達到大(da)(da)(da)型(xing)(xing)。二是廠(chang)(chang)壩(ba)正在抓緊建設一座大(da)(da)(da)型(xing)(xing)礦(kuang)(kuang)(kuang)山,將成(cheng)為(wei)西(xi)北(bei)(bei)冶煉廠(chang)(chang)主要礦(kuang)(kuang)(kuang)物原料供給(gei)基(ji)地(di),是全國大(da)(da)(da)型(xing)(xing)鉛鋅(xin)(xin)(xin)礦(kuang)(kuang)(kuang)山之一。
除(chu)上述五大鉛(qian)(qian)(qian)鋅(xin)生(sheng)產基地外(wai),內(nei)(nei)蒙(meng)古、江西、貴州等省區(qu)也建設了一批中(zhong)小型(xing)礦(kuang)(kuang)(kuang)(kuang)山(shan)(shan)。其中(zhong)內(nei)(nei)蒙(meng)古梧桐花鉛(qian)(qian)(qian)鋅(xin)礦(kuang)(kuang)(kuang)(kuang)、白音諾(nuo)鉛(qian)(qian)(qian)鋅(xin)礦(kuang)(kuang)(kuang)(kuang)、翁牛(niu)特旗硐(dong)子鉛(qian)(qian)(qian)鋅(xin)礦(kuang)(kuang)(kuang)(kuang)等礦(kuang)(kuang)(kuang)(kuang)山(shan)(shan)。內(nei)(nei)蒙(meng)古是全國生(sheng)產鉛(qian)(qian)(qian)鋅(xin)精礦(kuang)(kuang)(kuang)(kuang)主要省區(qu)之一,開發前(qian)景巨大。江西有銀山(shan)(shan)鉛(qian)(qian)(qian)鋅(xin)礦(kuang)(kuang)(kuang)(kuang)等。貴州有赫章鉛(qian)(qian)(qian)鋅(xin)礦(kuang)(kuang)(kuang)(kuang)、杉(shan)樹林鉛(qian)(qian)(qian)鋅(xin)礦(kuang)(kuang)(kuang)(kuang)等。
侵入途徑:吸(xi)入、食入。
吸入會(hui)引起口渴、干咳、頭痛、頭暈、高熱(re)、寒(han)戰(zhan)等。粉塵(chen)對眼有刺(ci)激(ji)性。口服刺(ci)激(ji)胃(wei)腸(chang)道(dao)。長期(qi)反復接觸對皮膚有刺(ci)激(ji)性。
1.貯于陰涼干燥處,遠(yuan)離火種(zhong)、熱源。
2.與氧化劑、胺類、硫、磷、酸堿類分儲。
3.滅火:干粉、干砂。禁用水和(he)泡沫。
維持人體正常食欲
缺(que)鋅會導致味(wei)覺下降,出(chu)現厭食、偏食甚至異(yi)食。
增強人體免疫力
鋅元(yuan)素是(shi)免(mian)疫器(qi)官(guan)胸(xiong)腺(xian)發育(yu)的營養(yang)素,只有(you)鋅量充(chong)足才(cai)能(neng)有(you)效保證胸(xiong)腺(xian)發育(yu),正常分化T淋巴細胞,促進細胞免(mian)疫功能(neng)。
鋅有(you)幫助生長(chang)發(fa)育(yu)(yu)、智(zhi)力發(fa)育(yu)(yu)、提高免疫力的(de)(de)(de)(de)作用,缺(que)乏鋅會(hui)對我(wo)們的(de)(de)(de)(de)身體,特別是(shi)生長(chang)發(fa)育(yu)(yu)造成嚴(yan)重影(ying)響,所以(yi),補(bu)充足(zu)夠的(de)(de)(de)(de)鋅是(shi)生長(chang)發(fa)育(yu)(yu),智(zhi)力發(fa)育(yu)(yu)必(bi)須的(de)(de)(de)(de)。平時除了飲(yin)食(shi)要均衡外,別忘了適(shi)當補(bu)充營養。
兒童
味覺障礙:厭(yan)食、偏食或(huo)異(yi)食;
皮膚(fu)疾(ji)患(huan):易(yi)患(huan)口腔潰瘍,受(shou)損傷口不易(yi)愈合,青春期痤瘡等;
生長(chang)發育不良:身材(cai)矮(ai)小、瘦弱;
免疫力下降,經常感冒、發燒(shao);
孕婦
妊(ren)娠反應加重:嗜酸,嘔吐加重
宮(gong)內(nei)胎兒(er)發育遲(chi)緩:導致早(zao)產兒(er)、低(di)體重兒(er)
分娩合(he)并癥增(zeng)多:產程延長、流產
推薦攝入量
年齡(歲) RNI(mg) UL(mg)
0~ 1.5
0.5~ 8 13
1~ 9 23
4~ 12 23
7~ 13.5 28
男 女 男 女
11~ 18.0 15.0 37 34
14~ 19.0 15.5 42 35
18~ 15.0 11.5 45 37
50 11.5 11.5 37 37
孕婦 35
早期 11.5
中期 16.5
晚期 16.5
乳母 21.5 35