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CN1065685A - Zinc oxide preparing process by ammonia method - Google Patents

Zinc oxide preparing process by ammonia method Download PDF

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CN1065685A
CN1065685A CN 92103230 CN92103230A CN1065685A CN 1065685 A CN1065685 A CN 1065685A CN 92103230 CN92103230 CN 92103230 CN 92103230 A CN92103230 A CN 92103230A CN 1065685 A CN1065685 A CN 1065685A
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zinc
method
oxide
sediment
slag
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CN 92103230
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Chinese (zh)
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CN1028768C (en )
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唐谟堂
鲁君乐
袁延胜
贺青蒲
晏德生
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中南工业大学
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    • CCHEMISTRY; METALLURGY
    • C01INORGANIC CHEMISTRY
    • C01GCOMPOUNDS CONTAINING METALS NOT COVERED BY SUBCLASSES C01D OR C01F
    • C01G9/00Compounds of zinc
    • C01G9/02Oxides; Hydroxides

Abstract

This invention relates to the metallurgy and chemical industry process of direct preparation of high grade zinc-oxide. It soaks out the stuff containing zinc with ammonia-ammonium complexing agent to separate throughly Zn and Fe, Mn. The soaking fluid is treated by sulfidation method to once remove imprity then once settle down zinc. The fluid after once sediment of zinc, the secondary sediment of zinc proceedes agent with complex salt method. After washing, the zinc hydroxide becomes high grade zinc oxide by calcine. The fluid after secondary sediment of zinc, through repeating formulation, returns back into soaking process. This method is suitable to the treatment inferior zice oxide containing zinc>15%, zinc containing dust in iron-smelting or manganese-smelting, roasting stuff of various zinc mine and zinc concentrate, wet method metallurgy fitering slag, zinc slag and cast zinc slag. etc.

Description

氨法制取氧化锌方法,本发明涉及一种湿法直接制取高级氧化锌的冶金化工过程。 Preparation of zinc ammonia oxidation process, the present invention relates to an advanced preparation of wet metallurgy process zinc oxide. 它通过氨络合浸出、净化、沉锌等步骤,产出高质量的氧化锌。 It ammine complex by leaching, purification, zinc Shen step, produce high-quality zinc oxide.

氧化锌物料的传统处理方法包括火法和湿法,其中湿法分为酸法和氨法。 Conventional processing method comprising zinc oxide material fire and wet, which is divided into a wet process acid and ammonia. 含锌较高的氧化锌物料(例如锌焙砂)大部分用酸法处理,该方法稳定可靠,但存在有能耗大,净化除杂过程复杂,需设备防腐等问题;为了解决上述方法的缺点,目前大有采用氨法处理含铁高的低锌物料的趋势。 Most zinc-containing high zinc oxide material (e.g. zinc calcine) is treated with an acid method, which is stable and reliable, but there is a large energy consumption, complicated processes Impurity required equipment corrosion problems; To solve the above methods disadvantage, use is currently a great deal with the trend of high ammonia low zinc iron material. 如《从炼铁高炉瓦斯污泥中回收氧化锌》(《江苏化工》,1990,№3)用25~28%的氨水处理回收氧化锌;《氯化铵浸取菱锌矿的研究》(《无机盐工业》,1986,№6,符万群)及《生产氧化锌新工艺路线》(《辽宁化工》,1990,№5)用较浓的氯化铵溶液浸出菱锌矿焙烧料以分别制取活性氧化锌及等级氧化锌;在国外也有人用碳酸铵溶解法生产高纯碳酸锌,如《高纯碳酸锌的生产》(《有色冶炼》,1991,№2)。 The "recovered from the blast furnace gas sludge zinc oxide" ( "Jiangsu Chemical Industry", 1990, №3) with 25 to 28% aqueous ammonia recovery process zinc oxide; "Study of zinc chloride leaching taken Link" ( "inorganic chemicals industry", 1986, №6, Wan group identifier), and "zinc oxide new routing" ( "Liaoning Chemical industry", 1990, №5) with more concentrated ammonium chloride solution and leached calcined material calamine respectively prepared take active zinc oxide and zinc oxide levels; it was also in foreign production method of high purity by dissolving ammonium carbonate zinc carbonate, such as "high purity zinc carbonate production" ( "non-ferrous metallurgy", 1991, №2). 以上方法存在的共同问题是浸出液锌浓度低,铅、锰等杂质溶出量大,除杂负担重,因此,若要生产高纯氧化锌产品,则对原料要求高或除杂过程复杂。 A common problem of the above method is a low concentration of the leaching solution of zinc, lead, manganese and other impurities eluted large, heavy burden impurity, thus, to produce high purity zinc oxide product, the raw material requirements of high impurity or complicated process.

本发明的目的是提供一种能处理多种含锌物料,特别是高铁低锌物料,并直接制取高级氧化锌的方法。 Object of the present invention is to provide a plurality of processing materials containing zinc, especially high-low iron zinc materials, made directly and zinc oxide Advanced Methods.

本发明的解决方案是用含硫酸根(SO2-4)及少量过硫酸根(S2O2-8)的氨络合剂浸出含锌物料,经浸出后,绝大部分铅及全部锰和铁留在浸出渣中,锌进入浸出液,随锌进入溶液的还有少量的铅以及镉、铜、镍、钴、银等能形成氨络合物的金属;浸出液用硫根(S2-)溶液除去镉、铜、铅等杂质元素;然后用复盐中和法(低氨体系)或蒸铵法(高氨体系)沉淀氢氧化锌;氢氧化锌洗净后煅烧成高级氧化锌;向二次沉锌后液中加入硫酸降低PH值,沉淀硫酸锌铵复盐,这种复盐返回一次沉锌过程作中和剂;二次沉锌液重新配方后返回浸出过程作氨络合浸出剂。 Solution of the present invention is a sulfate (of SO2-4) and a small amount of persulfate (S2O2 - 8) leaching a zinc-containing material is ammonia complexing agents, leached, the vast majority of the lead and all the remaining manganese and iron leach residue, leaching of zinc into solution with the zinc into the solution a small amount of lead and cadmium, copper, nickel, cobalt, silver, capable of forming a metal ammine complex; leachate with sulphide (S2-) was removed cadmium, copper, lead impurities; then precipitated zinc hydroxide by the method and the double salt (low ammonia system) or vapor ammonium (high ammonia system); wash after calcination zinc hydroxide into higher zinc oxide; zinc to the secondary Shen after addition of sulfuric acid was reduced PH, zinc ammonium sulfate precipitated double salt, complex salt of this procedure returns a zinc sink as the neutralizing agent; Shen secondary zinc was returned to the leaching process for reformulated ammine complex leaching agent.

有关过程和条件详述如下:一、络合浸出络合浸出过程的主要反应为: For procedures and conditions are detailed as follows: First, the main reaction is complexed complexed leaching of the leaching process is:

式中i为配位数,取值1~4。 Where i is the coordination number, ranging from 1 to 4.

在锌浸出的同时,铅形成难溶盐,低价锰氧化成高价锰进入浸渣: While leaching the zinc, lead form insoluble salts, Low High manganese to manganese oxide slag into the leaching:

络合浸出剂组成:含氨1.5~8.5N,铵盐1.5~8.5N,过硫酸铵为原料重量的0~10%,浸出液固比为2~10∶1,温度为0~90℃,时间为0.5~4h;过滤后的浸出渣用含铵盐3~6N的溶液(用量为络合剂量的5~40%),洗涤3次,再用水洗3~5次。 Complexing leachant composition: ammonia 1.5 ~ 8.5N, ammonium salt 1.5 ~ 8.5N, ammonium persulfate is 0 to 10% by weight of the starting material, the leaching liquid-solid ratio is from 2 to 10:1 temperature of 0 ~ 90 deg.] C, time of 0.5 ~ 4h; leaching residue after filtration of a solution containing 3 to 6N ammonium salt (in an amount of 5 to 40% of the amount of complexing agent), washed 3 times with water 3 to 5 times. 铵淋洗液与浸出液合并,拉入后面进行净化处理。 Ammonium eluent were combined and leaching, purification pull-back process.

二、净化过程在含有Cd、Cu、Pb等杂质元素的浸出液中加入2~4倍理论量的硫根(S2-)作为净化剂除杂: Second, the purification process was added 2 ~ 4 times the theoretical amount of sulphide (S2-) in the leachate containing Cd, Cu, Pb and other impurities in the impurity as a scavenger:

净化温度为0~60℃,时间为0.25~4h,所使用的硫化剂为NaHS或Na2S或S2-。 Purification temperature is 0 ~ 60 ℃, time 0.25 ~ 4h, the vulcanizing agent used is NaHS or Na2S or S2-. 净化渣先用3~6N铵盐溶液(用量为络合剂的1~5%)洗3次,再用水洗3~5次;铵盐洗液与净化液合并进行沉锌处理。 Purification residue first with 3 ~ 6N ammonium salt solution (an amount of complexing agent is 1 to 5%), washed three times, and then washed 3 to 5 times; salt washings were combined and purification process was subjected to a zinc sink.

三、一次沉锌对于游离氨较低的净化液,采用中和法沉锌,即用硫酸锌铵(其分子式为:ZnSO4·(NH4)2SO4·6H2O)复盐中和净化液: Third, a zinc sink for purifying low free ammonia solution, and the method using a zinc sink, i.e., zinc ammonium sulfate (which is of the formula: ZnSO4 · (NH4) 2SO4 · 6H2O) complex salt and the decontamination liquid:

中和温度为0~90℃,时间为0.25~6h,净化液的锌沉淀1/3~1/2。 And a temperature of 0 ~ 90 ℃, time 0.25 ~ 6h, decontamination liquid zinc precipitate 1/3 ~ 1/2.

对于游离氨较高的净化液,采用蒸氨法沉锌: For higher free ammonia purifying liquid ammonia was evaporated using zinc Shen:

蒸氨温度为80~98℃;蒸去净化液的20~60%。 Ammonia was distilled off temperature is 80 ~ 98 ℃; 20 ~ 60% of liquid was distilled to purify.

两种沉锌方法得到的氢氧化锌用纯水洗净(淋洗6~8次)送煅烧过程。 Zinc hydroxide, zinc washed with pure water two kinds sink obtained by the method (rinsed 6-8 times) to send the calcination process.

四、二次沉锌一次沉锌液尚含有总锌量1/3~1/2的锌,采用复盐沉锌法使锌完全沉淀,即向一次沉锌液中加入硫酸降低PH值到1.0~4.0,使锌生成硫酸锌、铵复盐: Fourth, a secondary zinc Shen Shen zinc solution still containing a total zinc content of zinc / 3 ~ 1/2, the method using a zinc complex salt of zinc sink completely precipitated, namely a heavy reduction of zinc sulfate was added to 1.0 PH value to 4.0, the zinc to produce zinc sulfate, ammonium double salts:

沉复盐温度0~80℃,时间0.25~4h。 Shen Fu salts temperature 0 ~ 80 ℃, time 0.25 ~ 4h. 所生成的硫酸锌铵复盐可送入一次沉锌过程进行中和沉锌。 The resulting zinc ammonium sulfate double salt can be fed into a zinc sink and sink zinc process.

五、氢氧化锌煅烧纯净的氢氧化锌在温度为300~900℃下煅烧0.25~6h,得到高质量的等级氧化锌: Fifth, zinc hydroxide, zinc hydroxide pure calcined at a temperature of 0.25 ~ 6h calcined at 300 ~ 900 ℃, high-quality zinc oxide grades:

本发明与酸法比较,有以下突出优点:1.杂质元素浸出少,除杂简单,工艺流程大为缩短;2.可适应高铁低锌物料的处理;3.操作温度低,节省能源;4.可直接制得高质量的等级氧化锌;5.不需设备防腐,投资省。 Compared with the method of the present invention is an acid, has the following outstanding advantages: 1. less leaching the impurity element, impurity simple, the process is greatly shortened; 2 can be adapted to handle high-speed low-zinc materials; 3 low operating temperatures, saving energy; 4 may be prepared directly from a high quality level of zinc oxide; 5. equipment corrosion, investment need. 与一般氨法比较,也具有明显的优点:1.浸出液锌浓度高,扩大了设备能力;2.铅浸出很少,锰、铁几乎不被浸出,容易除杂,过程简化;3.可直接制得高质量的产品;4.可采用低氨体系处理,操作条件好;5.复盐法二次沉锌十分彻底(Zn<2g/l),锌直收率高。 Compared with the general ammonia, also has significant advantages: a high zinc concentration leaching solution, expanding the ability of the device; 2 lead leaching rarely, manganese, iron is hardly leached, easy cleaning, simplification; 3 directly... obtain high-quality products; 4 can be low-ammonia process system, good operating conditions; 5 quadric sink zinc complex salt very thorough (Zn <2g / l), zinc straight yield. 本发明适用于含锌≥15%的次氧化锌,炼铁、炼锰含锌烟尘,各类锌矿及锌精矿的焙烧料,湿法冶金滤渣,热镀锌渣,铸锌浮渣等氧化锌或氢氧化锌或金属锌物料的处理。 The present invention is applicable to a secondary zinc ≥15% zinc oxide, iron, manganese refining zinc dust, zinc and various types of roasting zinc concentrate feed, residue hydrometallurgy, galvanized slag, dross cast zinc, etc. zinc oxide or zinc hydroxide or zinc-treated metal material.

附图说明 BRIEF DESCRIPTION

:图1为本发明的原则流程图。 : Principle Figure 1 is a flowchart of the invention.

实施例:1.广西某厂硫化锌精矿沸腾炉焙烧电收尘烟尘,其成分(%)为:Zn-65.56,Pb-11.96,Cd-0.97,Cu-0.029,Fe-0.55,Mn-0.39所使用的氨络合剂组成为:氨3.0N,硫酸铵5.0N,过硫酸铵为烟尘的3%,液固比为6.7∶1,浸出时间2小时,浸出温度20℃,洗氨组成与络合剂相同,其用量为络合剂用量的10%,用Na2S作净化剂,按浸出液中镉、铅、铜含量计算,Na2S用量为理论量的3.0倍。 Example: 1 Guangxi factory roaster roasting zinc sulphide concentrate ESP dust, its composition (%) of:. Zn-65.56, Pb-11.96, Cd-0.97, Cu-0.029, Fe-0.55, Mn-0.39 Suo consisting of ammonia complexing agents used are: ammonia 3.0N, 5.0N ammonium sulfate, ammonium persulfate 3% soot, liquid to solid ratio 6.7:1 leaching time of 2 hours, leaching temperature 20 ℃, ammonia washing composition and envelope the same mixture, in an amount of 10% of the amount of complexing agent, scavenger with Na2S as calculated according to the leaching solution of cadmium, lead, copper content, Na2S in an amount of 3.0 times the theoretical amount. 用上次返回的硫酸锌铵复盐在60℃下中和净化液0.5小时,使其中40~60%的锌沉淀成氢氧化锌。 With the last returned zinc ammonium sulfate double salt and at decontamination liquid at 60 ℃ 0.5 hour, 40 to 60%, wherein the zinc precipitated as zinc hydroxide. 氢氧化锌洗净后在700℃下煅烧2小时,得纯白的高级氧化锌,其成分(%)为:ZnO-99.9%,Pb<0.003,Cd<0.00045,Cu<0.0001,Mn<0.0001。 After washing zinc hydroxide was calcined at 700 ℃ 2 hours to give white advanced zinc oxide, its composition (%) as: ZnO-99.9%, Pb <0.003, Cd <0.00045, Cu <0.0001, Mn <0.0001. 用工业硫酸降低一次沉锌液的PH值到2.5~3的范围内,冷到室温,分离复盐;二次沉锌液中含Zn-0.98g/l,(NH4)2SO4-6.15N,作为硫酸铵的主要来源返回浸出过程。 Shen reduce a zinc sulfate solution with industrial PH value in the range of 2.5 to 3, cooled to room temperature, separates the multiplexed salt; Shen secondary zinc bath containing Zn-0.98g / l, (NH4) 2SO4-6.15N, as the main source of ammonium sulfate leaching process of return. 浸出液中锌浓度>90g/l;锌浸出率>95%,从烟尘到高质氧化锌的锌回收率≥93%。 Zinc concentration in the leachate> 90g / l; zinc leaching rate of> 95%, the recovery of zinc from zinc oxide fume quality to ≥93%.

2.湖南某厂锌沸腾炉焙烧烟尘,其成分(%)为:Zn-47.97,Pb-13.15,Cd-3.32,Cu-0.18,Fe-1.4,Ag-0.006,S-3.01所使用的氨络合剂组成为:氨4.0N,硫酸铵3.0N,过硫酸铵量为烟尘量的2.5%,液固比为5∶1,在80℃活化1小时后,再在常温下浸出2小时,浸出温度20℃,洗涤及净化过程同例1,净化液加热到83℃,锌氨络合物开始分解逸出氨气,至94℃,馏出净化液的40%。 2.Hunan factory roaster roasting zinc dust, its composition (%) as: Zn-47.97, ammine complex Pb-13.15, Cd-3.32, Cu-0.18, Fe-1.4, Ag-0.006, S-3.01 is used agents consisting of: ammonia 4.0N, 3.0N ammonium sulfate, ammonium persulfate in an amount of 2.5% of the amount of soot, liquid to solid ratio 5:1, after activation at 80 ℃ 1 hour and then leached at room temperature for 2 hours, the leaching temperature 20 ℃, washing and purification process same as in Example 1, purification was heated to 83 deg.] C, zinc ammonia complex begins to decompose the ammonia to escape, to 94 deg.] C, decontamination liquid distillate 40%. 沉淀的氢氧化锌洗干净化后在700℃下煅烧2小时,得高级氧化锌,其成分(%)为:ZnO-99.89,Pb<0.0015,Cd<0.0004,Cu<0.0001,Mn<0.0001。 The precipitated zinc hydroxide wash after calcined at 700 ℃ 2 hours to obtain a high level of zinc oxide, its composition (%) as: ZnO-99.89, Pb <0.0015, Cd <0.0004, Cu <0.0001, Mn <0.0001. 分去氢氧化锌的馏余液,用工业硫酸调PH值到2.5~3的范围内,冷到室温,分离复盐;二次沉锌液中含Zn-1.56g/l,(NH4)2SO4-5.5N,这种溶液可以开路,也可以返回浸出过程。 Dehydroepiandrosterone distillate raffinate fraction of zinc oxide, sulfuric acid industry adjust PH value in the range of 2.5 to 3, cooled to room temperature, separates the multiplexed salt; Shen secondary zinc bath containing Zn-1.56g / l, (NH4) 2SO4 -5.5N, this solution may be open, or return the leaching process. 蒸氨过程中氨回收率为66.27%,锌浸出率94.5%,锌总回收率>92%。 Ammonia was distilled off during the ammonia recovery was 66.27%, 94.5% zinc leaching rate, the total zinc recovery> 92%.

3.炼铁高炉含锌烟尘,其成份(%)为:Zn-17,Fe>40所使用的氨-铵络合剂组成为:氨2.5N,硫酸铵2.5N,过硫酸铵量为烟尘量的0.5%,液固比为2.5∶1,在室温下浸出2小时,用体积为浸出剂40%的氨-铵络合剂洗浸渣3次以上。 3. zinc blast furnace dust, its composition (%) as: Zn-17, ammonia Fe> 40 used - ammonium complexing agent consisting of: ammonia 2.5N, 2.5N ammonium sulfate, ammonium persulfate in an amount of soot 0.5% of the liquid to solid ratio of 2.5, at room temperature, leached for 2 hours with a volume of 40% ammonia leaching agent - ammonium complexing agent leached washed three more times. 然后按例1的方法制成高级氧化锌,其成分(%)为:ZnO-99.82,Pb<0.0002,Cd<0.0003,Cu<0.0001,Mn<0.0001。 Then the procedure of Example 1 is made of zinc oxide advanced, its composition (%) as: ZnO-99.82, Pb <0.0002, Cd <0.0003, Cu <0.0001, Mn <0.0001. 锌浸出率80%,锌总回收率75%。 Leaching rate of zinc 80%, 75% overall recovery of zinc.

4.火法挥发炼富锰渣高炉烟尘产得的次氧化锌,其成分(%)为:Zn-51.97,Pb-24.56,Cd-0.38,Cu-0.00338,Fe-0.039,Ag-0.011,Mn-0.03,所使用的氨-铵络合剂组成为:氨4.0N,硫酸铵3.0N,过硫酸铵量为次氧化锌的1%,液固比为5∶1,在85℃活化1小时后,再在常温下浸出1.5小时。 4. Fire refining volatile-rich secondary dust yielding zinc blast furnace slag manganese oxide, its composition (%) as: Zn-51.97, Pb-24.56, Cd-0.38, Cu-0.00338, Fe-0.039, Ag-0.011, Mn -0.03, using ammonia - ammonium complexing agent consisting of: ammonia 4.0N, 3.0N ammonium sulfate, ammonium persulfate in an amount of 1% of the time of zinc oxide, liquid to solid ratio 5:1 activated hours at 85 ℃ 1 after then leached at room temperature for 1.5 hours. 洗涤及净化过程同例1,用例2的方法制成高级氧化锌,其成分(%)为:ZnO-99.97,Pb<0.002,Cd<0.0003,Cu<0.0001,Mn<0.0001。 Washing and purification process same as in Example 1, prepared by the method of Example 2 High zinc oxide, its composition (%) as: ZnO-99.97, Pb <0.002, Cd <0.0003, Cu <0.0001, Mn <0.0001. 蒸氨过程中氨回收率为68.%,锌浸出率94.5%,锌总回收率>92%,浸液锌浓度为86g/l。 Ammonia was distilled off during the ammonia recovery was 68%, 94.5% zinc leach, zinc overall recovery> 92%, a zinc concentration of immersion 86g / l.

Claims (4)

  1. 1.制取高级氧化锌的方法,包括含锌物料的浸出、净化、一次沉锌、二次沉锌及煅烧等工艺过程,其特征在于:a&gt;:浸出过程使用的络合浸出剂为:含氨1.5~8.5N,铵盐1.5~8.5N,过硫酸铵为原料重量的0~10%,浸出液固比为2~10∶1,温度为0~90℃,时间为0.5~4h;b&gt;浸出液的净化采用2~4倍理论量的硫根(S2-)作为净化剂,净化温度为0~60℃,时间为0.25~4h;c&gt;一次沉锌采用(i)复盐中和沉锌法,中和温度为0~90℃,时间为0.25~6h,(ii)蒸铵沉锌法,控制温度为80~98℃;d&gt;二次沉锌过程中向一次沉锌液中加硫酸降低PH值到1.0~4.0,沉锌温度0~80℃,时间0.25~4h;e&gt;一次沉锌得到的氢氧化锌的煅烧温度为300~900℃,时间为0.25~6h。 A method of preparing advanced zinc oxide, zinc-containing materials including leaching, purification, a zinc sink, zinc and Shen secondary calcination process, characterized by: a & gt ;: complexing lixiviant leaching process is used: ammonia 1.5 ~ 8.5N, ammonium salt 1.5 ~ 8.5N, ammonium persulfate is 0 to 10% by weight of the starting material, the leaching liquid-solid ratio is from 2 to 10:1 temperature of 0 ~ 90 deg.] C, time is 0.5 ~ 4h; b & gt ; purified leachate using 2 to 4 times the theoretical amount of sulphide (S2-) as a scavenger, purification temperature is 0 ~ 60 ℃, time 0.25 ~ 4h; c & gt; a sink zinc using (i) complex salt and Shen zinc method, and a temperature of 0 ~ 90 ℃, time 0.25 ~ 6h, (ii) vapor ammonium Shen zinc method, control of the temperature of 80 ~ 98 ℃; d & gt; secondary Shen zinc during the first heavy liquid zinc added sulfuric acid to reduce the PH value of 1.0 to 4.0, zinc sink temperature 0 ~ 80 ℃, time 0.25 ~ 4h; e & gt; firing temperature of zinc hydroxide was obtained as a zinc sink 300 ~ 900 ℃, time 0.25 ~ 6h.
  2. 2.根据权利要求1所述的方法,其特征在于,所述的硫化剂可以为NaHS或Na2S或H2S或S2-。 2. The method according to claim 1, wherein said vulcanizing agent may be NaHS or Na2S or H2S or S2-.
  3. 3.根据权利要求1所述的方法,其特征在于,所述的复盐为硫酸锌铵,其分子式为:ZnSO4·(NH4)2SO4·6H2O。 3. The method according to claim 1, wherein the zinc ammonium complex salt is sulfate having the formula: ZnSO4 · (NH4) 2SO4 · 6H2O.
  4. 4.根据权利要求1所述的方法,其特征在于,所述的含锌物料包括含锌≥15%的次氧化锌,炼铁、炼锰含锌烟尘,各类锌矿及锌精矿的焙烧料,湿法冶金滤渣,热镀锌渣,铸锌浮渣等氧化锌或氢氧化锌或金属锌物料。 4. The method according to claim 1, wherein said zinc-containing material comprises zinc views of ≥15% zinc oxide, iron, manganese refining zinc dust, various types of zinc concentrate and zinc calcined material, hydrometallurgy residue, galvanized slag, dross and other cast zinc oxide, zinc hydroxide, or zinc or zinc metal material.
CN 92103230 1992-04-28 1992-04-28 Method for preparing zinc oxide by ammonia process CN1028768C (en)

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CN102747226A (en) * 2012-04-25 2012-10-24 昆明理工大学 Method for treating zinc hydrometallurgy waste residue by using alkali ammonium sulfur coupling method
CN102828033A (en) * 2012-09-25 2012-12-19 四川巨宏科技有限公司 Method for recycling electrolytic zinc acid leaching slag
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CN101891607A (en) * 2010-07-09 2010-11-24 深圳市危险废物处理站有限公司 Production method for synthesizing zinc fumarate feed addictive by using secondary zinc oxide
CN102747226A (en) * 2012-04-25 2012-10-24 昆明理工大学 Method for treating zinc hydrometallurgy waste residue by using alkali ammonium sulfur coupling method
CN102747226B (en) 2012-04-25 2014-09-03 昆明理工大学 Method for treating zinc hydrometallurgy waste residue by using alkali ammonium sulfur coupling method
CN102633295A (en) * 2012-04-26 2012-08-15 中南大学 Oxidation pretreatment method of soot containing zinc
CN102828032B (en) * 2012-09-25 2015-03-11 四川锌鸿科技有限公司 Method for producing lithopone by utilizing electrolytic zinc acid leaching slag
CN102828035A (en) * 2012-09-25 2012-12-19 四川巨宏科技有限公司 Method for producing high-purity zinc oxide through decarbonization on electrolytic zinc acid leaching slag by adopting ammonia process
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US9394183B2 (en) 2012-09-25 2016-07-19 Sichuan Xinhong Technology Co., Ltd Method for producing a high-purity nanometer zinc oxide from electrolytic zinc acid leaching residues by ammonia decarburization
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