CN102021261B - Method for preparing iron ingot and co-producing cadmium sulfate and copper sulfate by using arc method mixed iron slag - Google Patents
Method for preparing iron ingot and co-producing cadmium sulfate and copper sulfate by using arc method mixed iron slag Download PDFInfo
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- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 title claims abstract description 103
- 229910052742 iron Inorganic materials 0.000 title claims abstract description 52
- 239000002893 slag Substances 0.000 title claims abstract description 38
- 238000000034 method Methods 0.000 title claims abstract description 36
- 229910000331 cadmium sulfate Inorganic materials 0.000 title claims abstract description 15
- 229910000365 copper sulfate Inorganic materials 0.000 title claims abstract description 15
- ARUVKPQLZAKDPS-UHFFFAOYSA-L copper(II) sulfate Chemical compound [Cu+2].[O-][S+2]([O-])([O-])[O-] ARUVKPQLZAKDPS-UHFFFAOYSA-L 0.000 title claims abstract description 14
- QCUOBSQYDGUHHT-UHFFFAOYSA-L cadmium sulfate Chemical compound [Cd+2].[O-]S([O-])(=O)=O QCUOBSQYDGUHHT-UHFFFAOYSA-L 0.000 title claims abstract description 13
- 239000002699 waste material Substances 0.000 claims abstract description 22
- 238000010891 electric arc Methods 0.000 claims abstract description 14
- 238000004519 manufacturing process Methods 0.000 claims abstract description 14
- 238000011282 treatment Methods 0.000 claims abstract description 7
- 238000004821 distillation Methods 0.000 claims abstract description 4
- VEXZGXHMUGYJMC-UHFFFAOYSA-N Hydrochloric acid Chemical compound Cl VEXZGXHMUGYJMC-UHFFFAOYSA-N 0.000 claims description 16
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 claims description 10
- YKYOUMDCQGMQQO-UHFFFAOYSA-L cadmium dichloride Chemical compound Cl[Cd]Cl YKYOUMDCQGMQQO-UHFFFAOYSA-L 0.000 claims description 10
- 238000005260 corrosion Methods 0.000 claims description 10
- 239000012065 filter cake Substances 0.000 claims description 10
- 239000012535 impurity Substances 0.000 claims description 10
- ORTQZVOHEJQUHG-UHFFFAOYSA-L copper(II) chloride Chemical compound Cl[Cu]Cl ORTQZVOHEJQUHG-UHFFFAOYSA-L 0.000 claims description 9
- 230000007797 corrosion Effects 0.000 claims description 9
- 239000000706 filtrate Substances 0.000 claims description 7
- QAOWNCQODCNURD-UHFFFAOYSA-N Sulfuric acid Chemical compound OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 claims description 6
- 239000007795 chemical reaction product Substances 0.000 claims description 6
- 238000002360 preparation method Methods 0.000 claims description 6
- 239000000047 product Substances 0.000 claims description 6
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 claims description 5
- VEXZGXHMUGYJMC-UHFFFAOYSA-M Chloride anion Chemical compound [Cl-] VEXZGXHMUGYJMC-UHFFFAOYSA-M 0.000 claims description 5
- 229910002092 carbon dioxide Inorganic materials 0.000 claims description 5
- 239000001569 carbon dioxide Substances 0.000 claims description 5
- 229910002091 carbon monoxide Inorganic materials 0.000 claims description 5
- 238000010438 heat treatment Methods 0.000 claims description 5
- 150000002506 iron compounds Chemical class 0.000 claims description 5
- 239000000843 powder Substances 0.000 claims description 5
- 238000001816 cooling Methods 0.000 claims description 4
- 229960003280 cupric chloride Drugs 0.000 claims description 4
- 238000006243 chemical reaction Methods 0.000 claims description 2
- 238000012546 transfer Methods 0.000 claims description 2
- 238000001914 filtration Methods 0.000 claims 1
- 239000011259 mixed solution Substances 0.000 claims 1
- 238000005292 vacuum distillation Methods 0.000 claims 1
- 229910001385 heavy metal Inorganic materials 0.000 abstract description 6
- BDOSMKKIYDKNTQ-UHFFFAOYSA-N cadmium atom Chemical compound [Cd] BDOSMKKIYDKNTQ-UHFFFAOYSA-N 0.000 abstract description 4
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 abstract description 3
- 229910052793 cadmium Inorganic materials 0.000 abstract description 3
- 229910052802 copper Inorganic materials 0.000 abstract description 3
- 239000010949 copper Substances 0.000 abstract description 3
- 239000000126 substance Substances 0.000 abstract description 3
- 238000010306 acid treatment Methods 0.000 abstract description 2
- 150000001875 compounds Chemical class 0.000 abstract description 2
- 238000005516 engineering process Methods 0.000 abstract description 2
- 238000012545 processing Methods 0.000 description 8
- 238000002156 mixing Methods 0.000 description 7
- 229910052751 metal Inorganic materials 0.000 description 5
- QPLDLSVMHZLSFG-UHFFFAOYSA-N Copper oxide Chemical compound [Cu]=O QPLDLSVMHZLSFG-UHFFFAOYSA-N 0.000 description 4
- CXKCTMHTOKXKQT-UHFFFAOYSA-N cadmium oxide Inorganic materials [Cd]=O CXKCTMHTOKXKQT-UHFFFAOYSA-N 0.000 description 4
- 239000002184 metal Substances 0.000 description 4
- 150000003839 salts Chemical class 0.000 description 4
- 239000005751 Copper oxide Substances 0.000 description 3
- CFEAAQFZALKQPA-UHFFFAOYSA-N cadmium(2+);oxygen(2-) Chemical compound [O-2].[Cd+2] CFEAAQFZALKQPA-UHFFFAOYSA-N 0.000 description 3
- 229910000431 copper oxide Inorganic materials 0.000 description 3
- 238000000605 extraction Methods 0.000 description 3
- 239000010814 metallic waste Substances 0.000 description 3
- 238000011160 research Methods 0.000 description 3
- 229910021591 Copper(I) chloride Inorganic materials 0.000 description 2
- HCHKCACWOHOZIP-UHFFFAOYSA-N Zinc Chemical compound [Zn] HCHKCACWOHOZIP-UHFFFAOYSA-N 0.000 description 2
- OXBLHERUFWYNTN-UHFFFAOYSA-M copper(I) chloride Chemical compound [Cu]Cl OXBLHERUFWYNTN-UHFFFAOYSA-M 0.000 description 2
- 229910052725 zinc Inorganic materials 0.000 description 2
- 239000011701 zinc Substances 0.000 description 2
- VYZAMTAEIAYCRO-UHFFFAOYSA-N Chromium Chemical compound [Cr] VYZAMTAEIAYCRO-UHFFFAOYSA-N 0.000 description 1
- GYHNNYVSQQEPJS-UHFFFAOYSA-N Gallium Chemical compound [Ga] GYHNNYVSQQEPJS-UHFFFAOYSA-N 0.000 description 1
- 239000005083 Zinc sulfide Substances 0.000 description 1
- 238000009825 accumulation Methods 0.000 description 1
- 239000002253 acid Substances 0.000 description 1
- RHZUVFJBSILHOK-UHFFFAOYSA-N anthracen-1-ylmethanolate Chemical compound C1=CC=C2C=C3C(C[O-])=CC=CC3=CC2=C1 RHZUVFJBSILHOK-UHFFFAOYSA-N 0.000 description 1
- 239000003830 anthracite Substances 0.000 description 1
- 229910052788 barium Inorganic materials 0.000 description 1
- DSAJWYNOEDNPEQ-UHFFFAOYSA-N barium atom Chemical compound [Ba] DSAJWYNOEDNPEQ-UHFFFAOYSA-N 0.000 description 1
- TZCXTZWJZNENPQ-UHFFFAOYSA-L barium sulfate Chemical compound [Ba+2].[O-]S([O-])(=O)=O TZCXTZWJZNENPQ-UHFFFAOYSA-L 0.000 description 1
- CJDPJFRMHVXWPT-UHFFFAOYSA-N barium sulfide Chemical compound [S-2].[Ba+2] CJDPJFRMHVXWPT-UHFFFAOYSA-N 0.000 description 1
- 239000010428 baryte Substances 0.000 description 1
- 229910052601 baryte Inorganic materials 0.000 description 1
- 229910052804 chromium Inorganic materials 0.000 description 1
- 239000011651 chromium Substances 0.000 description 1
- 239000003245 coal Substances 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000012847 fine chemical Substances 0.000 description 1
- 229910052733 gallium Inorganic materials 0.000 description 1
- 229910052732 germanium Inorganic materials 0.000 description 1
- GNPVGFCGXDBREM-UHFFFAOYSA-N germanium atom Chemical compound [Ge] GNPVGFCGXDBREM-UHFFFAOYSA-N 0.000 description 1
- DLINORNFHVEIFE-UHFFFAOYSA-N hydrogen peroxide;zinc Chemical compound [Zn].OO DLINORNFHVEIFE-UHFFFAOYSA-N 0.000 description 1
- 229910052738 indium Inorganic materials 0.000 description 1
- APFVFJFRJDLVQX-UHFFFAOYSA-N indium atom Chemical compound [In] APFVFJFRJDLVQX-UHFFFAOYSA-N 0.000 description 1
- 239000000543 intermediate Substances 0.000 description 1
- PIJPYDMVFNTHIP-UHFFFAOYSA-L lead sulfate Chemical compound [PbH4+2].[O-]S([O-])(=O)=O PIJPYDMVFNTHIP-UHFFFAOYSA-L 0.000 description 1
- 238000005649 metathesis reaction Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000000049 pigment Substances 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 238000004064 recycling Methods 0.000 description 1
- 239000002910 solid waste Substances 0.000 description 1
- 229910052984 zinc sulfide Inorganic materials 0.000 description 1
- DRDVZXDWVBGGMH-UHFFFAOYSA-N zinc;sulfide Chemical compound [S-2].[Zn+2] DRDVZXDWVBGGMH-UHFFFAOYSA-N 0.000 description 1
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Abstract
Description
技术领域 technical field
本发明涉及无机化工立德粉制造废铅渣的综合利用技术领域，尤其是一种电弧法混合铁渣制取铁锭联产硫酸镉和硫酸铜的方法。The invention relates to the technical field of comprehensive utilization of waste lead slag produced by inorganic chemical industry lithopone, in particular to a method for producing iron ingots and co-producing cadmium sulfate and copper sulfate by mixing iron slag by an electric arc method.
技术背景 technical background
立德粉是白色高级颜料锌钡白的俗称，其主要的生产原料为二氧化锌、硫酸、重晶石和无烟煤。是由硫化钡与硫化锌进行复分解反应而制得。在立德粉生产的过程中产生多种重金属废渣，如铅渣、锌渣、镉渣、钡渣、煤渣等固废，每年产生积累约有上千吨左右，不仅污染农田、环境，危害农作物生长，而且还造成了废渣中铅、镐、铜、锌以及锗、稼、锢、铭等数种金属元素的浪费。目前这种废渣大多露天堆放或者填空、铺路，这样不仅浪费资源，而且污染环境。为此人们进行了大量的研究，1973年01期的《精细化工中间体》中对用立德粉废渣生产多种产品进行了研究，《湖南化工》1992年第22卷第1期也报道了《从立德粉酸浸废渣制取硫酸铅的研究》，但是文中都还只是处于理论研究，还没有比较实际的处理和利用方法，目前也没有电弧法混合铁渣制取铁锭联产硫酸镉和硫酸铜的方法的相关报道。Lithopone is a common name for white high-grade pigment lithopone, and its main raw materials are zinc dioxide, sulfuric acid, barite and anthracite. It is prepared by metathesis reaction of barium sulfide and zinc sulfide. In the process of lithopone production, a variety of heavy metal waste residues are produced, such as lead slag, zinc slag, cadmium slag, barium slag, coal slag and other solid wastes. The annual accumulation of about thousands of tons not only pollutes farmland and the environment, but also endangers crops. Growth, but also caused the waste of several metal elements such as lead, pickaxe, copper, zinc and germanium, gallium, indium, and chromium in the waste slag. At present, most of these waste residues are piled up in the open air or filled up or paved, which not only wastes resources, but also pollutes the environment. For this reason people have carried out a large amount of researches, in 1973 " fine chemical intermediates " in the 01 issue, researched on the production of various products with lithopone waste residue, "Hunan Chemical Industry " also reported in the 1992 volume 22 the first issue "Research on the Preparation of Lead Sulfate from Lithopone Acid Leach Waste Residue", but the article is only in theoretical research, and there is no practical treatment and utilization method. At present, there is no arc method to mix iron slag to produce iron ingots and co-produce sulfuric acid. Related reports on cadmium and copper sulfate methods.
发明内容 Contents of the invention
本发明提供了一种不仅能干干净净的吞掉重金属废渣，又能制得有价值物品的电弧法混合铁渣制取铁锭联产硫酸镉和硫酸铜的方法。The invention provides a method for producing iron ingots and co-producing cadmium sulfate and copper sulfate by mixing iron slag with electric arc method, which can not only swallow heavy metal waste slag cleanly, but also produce valuable items.
为了达到上述的目的，本发明的技术方案为：In order to achieve the above-mentioned purpose, technical scheme of the present invention is:
电弧法混合铁渣制取铁锭联产硫酸镉和硫酸铜的方法，包括如下制备步骤：The method for producing iron ingots and co-producing cadmium sulfate and copper sulfate by mixing iron slag by electric arc method comprises the following preparation steps:
步骤A、将电弧法混合铁渣放进反射炉里，缓缓加热使温度上升到1600℃～1700℃；铁渣及其铁的化合物融化成为融融状态的铁水流淌出来，铁水用于制取铁锭，里面残存的一氧化碳和二氧化碳气体随反射炉内温度的升高挥发出来；剩下的废渣排出来冷却到下一道工序进行深加工提取稀有金属盐；Step A. Put the iron slag mixed with the arc method into the reverberatory furnace, and heat it slowly to raise the temperature to 1600°C~1700°C; the iron slag and its iron compound melt into molten iron flowing out, and the molten iron is used to produce iron Ingots, the remaining carbon monoxide and carbon dioxide gas are volatilized as the temperature in the reverberatory furnace rises; the remaining waste residue is discharged and cooled to the next process for further processing to extract rare metal salts;
步骤B、将步骤A中高温处理剩下的废渣，先用粉碎机粉碎成80～120目的粗粉，然后转移到第一耐腐蚀反应器里，以纯质量比1∶0.91与盐酸进行反应；Step B, using a pulverizer to pulverize the remaining waste residue from the high-temperature treatment in step A into a coarse powder of 80 to 120 meshes, then transfer it to the first corrosion-resistant reactor, and react with hydrochloric acid at a pure mass ratio of 1:0.91;
步骤C、将步骤B所得反应产物用第一过滤器进行过滤，得到夹带的氯化物的滤饼杂质和澄清的氯化铜、氯化镉滤液，滤饼杂质转移到另一工序进行深加工；Step C, the reaction product obtained in step B is filtered with a first filter to obtain the filter cake impurities of entrained chloride and clarified copper chloride and cadmium chloride filtrate, and the filter cake impurities are transferred to another process for further processing;
步骤D、将步骤C中过滤得到的滤液送入第二耐腐蚀反应器，与硫酸以纯质量比1∶0.23～0.63进行化学反应；反应生成硫酸镉、硫酸铜及盐酸的混合溶液；Step D, sending the filtrate obtained by filtering in step C into the second corrosion-resistant reactor, and carrying out a chemical reaction with sulfuric acid at a pure mass ratio of 1: 0.23 to 0.63; the reaction generates a mixed solution of cadmium sulfate, copper sulfate and hydrochloric acid;
步骤E、步骤D中所得反应产物用第二过滤器进行过滤，得到的滤饼杂质焚烧、深埋；The reaction product obtained in step E and step D is filtered with a second filter, and the obtained filter cake impurities are incinerated and buried deeply;
步骤F、步骤E中所得的滤液依次经过减压蒸馏器和冷却塔，进行减压蒸馏和冷却，先后得到硫酸镉产品和硫酸铜产品。The filtrate obtained in step F and step E passes through a vacuum distiller and a cooling tower successively, carries out vacuum distillation and cooling, and successively obtains a cadmium sulfate product and a copper sulfate product.
其中，所述步骤A中的缓缓加热是以每分钟升温2℃～5℃的速度缓缓加热。Wherein, the slow heating in the step A is slowly heating at a rate of 2°C to 5°C per minute.
所述步骤F中，蒸馏剩下的盐酸返回步骤A中所述的第一耐腐蚀反应器中循环使用。In the step F, the hydrochloric acid remaining in the distillation is returned to the first corrosion-resistant reactor described in the step A for recycling.
本发明主要是运用了电弧炉的技术来提取立德粉废渣里的重金属，将废渣依次经过高温处理、酸处理和蒸馏处理工序，从而制得单质铁、铜、镉元素及其、有价值的化合物，本发明既能干干净净的吞掉重金属废渣，减轻重金属对环境的污染；又能制得有价值的产品，具有显著的社会效益和经济效益；尤其工艺及生产设备简单，是一种比较实际的处理和利用方法。The present invention mainly uses the electric arc furnace technology to extract heavy metals in lithopone waste residue, and the waste residue is subjected to high-temperature treatment, acid treatment and distillation treatment steps in order to obtain elemental iron, copper, cadmium and other valuable elements. Compound, the present invention can not only swallow the heavy metal waste slag cleanly, reduce the pollution of heavy metal to the environment; but also can make valuable products, with significant social and economic benefits; especially simple process and production equipment, is a relatively Practical methods of handling and utilization.
本发明的反应原理为：The reaction principle of the present invention is:
CuO+2HCl＝＝＝＝CuCl2+H2OCuO+2HCl====CuCl 2 +H 2 O
CdO+2HCl＝＝＝＝CdCl2+H2OCdO+2HCl====CdCl 2 +H 2 O
CuCl2+H2SO4＝＝＝＝CuSO4+2HClCuCl 2 +H 2 SO 4 ====CuSO 4 +2HCl
CdCl2+H2SO4＝＝＝＝CdSO4+2HClCdCl 2 +H 2 SO 4 ====CdSO 4 +2HCl
附图说明 Description of drawings
图1是电弧法混合铁渣制取铁锭联产硫酸镉和硫酸铜的方法的工艺流程图；Fig. 1 is the process flow diagram of the method for producing iron ingot co-production cadmium sulfate and copper sulfate by electric arc method mixing iron slag;
其中：in:
1-反射炉，2-铁锭，3-粉碎机，4-第一耐腐蚀反应器，5-第一过滤器，6-第二耐腐蚀反应器，7-第二过滤器，8-减压蒸馏器，9-冷却塔，10-硫酸镉产品，11-硫酸铜产品。1-reverberatory furnace, 2-iron ingot, 3-crusher, 4-first corrosion-resistant reactor, 5-first filter, 6-second corrosion-resistant reactor, 7-second filter, 8-minus Pressure still, 9-cooling tower, 10-cadmium sulfate product, 11-copper sulfate product.
具体的实施方式specific implementation
实施例1Example 1
电弧法混合铁渣制取铁锭联产硫酸镉和硫酸铜的方法，包括如下制备步骤：The method for producing iron ingots and co-producing cadmium sulfate and copper sulfate by mixing iron slag by electric arc method comprises the following preparation steps:
步骤A、将电弧法混合铁渣放进反射炉1里，缓缓加热(每分钟升温2℃的速度缓缓加热)使温度上升到1600℃；此时铁渣及其铁的化合物已经融化成为融融状态的铁水流淌出来，铁水用于制取铁锭2；里面部分残存的一氧化碳和二氧化碳气体也随反射炉1内温度的上升挥发出来，剩下的废渣排出来冷却到下一道工序进行深加工提取稀有金属盐；Step A, put the iron slag mixed with electric arc method into the reverberatory furnace 1, and heat slowly (slowly heating at a rate of 2°C per minute) so that the temperature rises to 1600°C; at this time, the iron slag and its iron compounds have melted into The molten iron flows out, and the molten iron is used to produce
步骤B、将步骤A中高温处理剩下的废渣(以500kg纯氧化铜和200kg纯氧化镉计)，先用粉碎机3粉碎成80目的粗粉，然后转移到第一耐腐蚀反应器4里，以纯质量比1∶0.91与盐酸进行反应；Step B, the remaining waste slag (in terms of 500kg pure copper oxide and 200kg pure cadmium oxide) in step A is first pulverized into 80 mesh coarse powder with
步骤C、将步骤B所得反应产物用第一过滤器5进行过滤，得到夹带氯化物的滤饼杂质和澄清的839.72kg氯化铜、686.84kg氯化镉滤液，滤饼杂质转移到另一工序进行深加工；Step C, the reaction product obtained in step B is filtered with the first filter 5 to obtain filter cake impurities entraining chloride and clarified 839.72kg cupric chloride and 686.84kg cadmium chloride filtrate, and the filter cake impurities are transferred to another process carry out deep processing;
步骤D、将步骤C中过滤得到的滤液(以氯化镉计)送入第二耐腐蚀反应器6，与硫酸以纯质量比1∶0.23进行化学反应；反应生成223.97kg硫酸镉、314.24kg硫酸铜及盐酸的混合溶液；Step D, the filtrate (calculated as cadmium chloride) obtained by filtering in step C is sent to the second corrosion-resistant reactor 6, and sulfuric acid is carried out chemical reaction with pure mass ratio 1: 0.23; Reaction generates 223.97kg cadmium sulfate, 314.24kg sulfuric acid Mixed solution of copper and hydrochloric acid;
步骤E、步骤D中所得反应产物用第二过滤器7进行过滤，得到的滤饼杂质焚烧、深埋；The reaction product obtained in step E and step D is filtered with the second filter 7, and the obtained filter cake impurities are incinerated and buried deeply;
步骤F、步骤E中所得的滤液依次经过减压蒸馏器8和冷却塔9，进行减压蒸馏和冷却，先后得到377.62kg硫酸镉产品10和491.61kg硫酸铜产品11；蒸馏剩下的盐酸返回步骤A中所述的第一耐腐蚀反应器4中循环使用。The filtrate obtained in step F, step E passes through vacuum distiller 8 and
实施例2Example 2
电弧法混合铁渣制取铁锭联产硫酸镉和硫酸铜的方法，包括如下制备步骤：The method for producing iron ingots and co-producing cadmium sulfate and copper sulfate by mixing iron slag by electric arc method comprises the following preparation steps:
步骤A、将电弧法混合铁渣放进反射炉1里，缓缓加热(每分钟升温4℃的速度缓缓加热)使温度上升到1650℃；此时铁渣及其铁的化合物已经融化成为融融状态的铁水流淌出来，铁水用于制取铁锭2；里面部分残存的一氧化碳和二氧化碳气体也随反射炉1内温度的上升挥发出来，剩下的废渣排出来冷却到下一道工序进行深加工提取稀有金属盐；Step A, put the iron slag mixed with arc method into the reverberatory furnace 1, and heat slowly (slowly heating at a rate of 4°C per minute) to make the temperature rise to 1650°C; at this time, the iron slag and its iron compounds have melted into The molten iron flows out, and the molten iron is used to produce
步骤B、将步骤A中高温处理剩下的废渣(以500kg纯氧化铜和200kg纯氧化镉计)，先用粉碎机3粉碎成100目的粗粉，然后转移到第一耐腐蚀反应器4里，以纯质量比1∶0.91与盐酸进行反应；Step B, the remaining waste slag (in terms of 500kg pure copper oxide and 200kg pure cadmium oxide) in step A is first pulverized into a 100-mesh coarse powder with a
步骤C、将步骤B所得反应产物用第一过滤器5进行过滤，得到夹带氯化物的滤饼杂质和澄清的839.72kg氯化铜、686.84kg氯化镉滤液，滤饼杂质转移到另一工序进行深加工；Step C, the reaction product obtained in step B is filtered with the first filter 5 to obtain filter cake impurities entraining chloride and clarified 839.72kg cupric chloride and 686.84kg cadmium chloride filtrate, and the filter cake impurities are transferred to another process carry out deep processing;
步骤D、将步骤C中过滤得到的滤液(以氯化镉计)送入第二耐腐蚀反应器6，与硫酸以纯质量比1∶0.43进行化学反应；反应生成418.72kg硫酸镉、587.49kg硫酸铜及盐酸的混合溶液；Step D, the filtrate (calculated as cadmium chloride) obtained by filtering in step C is sent to the second corrosion-resistant reactor 6, and sulfuric acid is carried out chemical reaction with pure mass ratio 1: 0.43; Reaction generates 418.72kg cadmium sulfate, 587.49kg sulfuric acid Mixed solution of copper and hydrochloric acid;
步骤E、步骤D中所得反应产物用第二过滤器7进行过滤，得到的滤饼杂质焚烧、深埋；The reaction product obtained in step E and step D is filtered with the second filter 7, and the obtained filter cake impurities are incinerated and buried deeply;
步骤F、步骤E中所得的滤液依次经过减压蒸馏器8和冷却塔9，进行减压蒸馏和冷却，先后得到707.53kg硫酸镉产品10和919.09kg硫酸铜产品11；蒸馏剩下的盐酸返回步骤A中所述的第一耐腐蚀反应器4中循环使用。The filtrate obtained in step F, step E passes through vacuum distiller 8 and
实施例3Example 3
电弧法混合铁渣制取铁锭联产硫酸镉和硫酸铜的方法，包括如下制备步骤：The method for producing iron ingots and co-producing cadmium sulfate and copper sulfate by mixing iron slag by electric arc method comprises the following preparation steps:
步骤A、将电弧法混合铁渣放进反射炉1里，缓缓加热(每分钟升温5℃的速度缓缓加热)使温度上升到1700℃；此时铁渣及其铁的化合物已经融化成为融融状态的铁水流淌出来，铁水用于制取铁锭2；里面部分残存的一氧化碳和二氧化碳气体也随反射炉1内温度的上升挥发出来，剩下的废渣排出来冷却到下一道工序进行深加工提取稀有金属盐；Step A, put the iron slag mixed with the electric arc method into the reverberatory furnace 1, and slowly heat (slowly heat at a rate of 5°C per minute) so that the temperature rises to 1700°C; at this time, the iron slag and its iron compounds have melted into The molten iron flows out, and the molten iron is used to produce
步骤B、将步骤A中高温处理剩下的废渣(以500kg纯氧化铜和200kg纯氧化镉计)，先用粉碎机3粉碎成120目的粗粉，然后转移到第一耐腐蚀反应器4里，以纯质量比1∶0.91与盐酸进行反应；Step B, the remaining waste slag (in terms of 500kg pure copper oxide and 200kg pure cadmium oxide) in step A is first pulverized into 120 mesh coarse powder with
步骤C、将步骤B所得反应产物用第一过滤器5进行过滤，得到夹带氯化物的滤饼杂质和澄清的839.72kg氯化铜、686.84kg氯化镉滤液，滤饼杂质转移到另一工序进行深加工；Step C, the reaction product obtained in step B is filtered with the first filter 5 to obtain filter cake impurities entraining chloride and clarified 839.72kg cupric chloride and 686.84kg cadmium chloride filtrate, and the filter cake impurities are transferred to another process carry out deep processing;
步骤D、将步骤C中过滤得到的滤液(以氯化镉计)送入第二耐腐蚀反应器6，与硫酸以纯质量比1∶0.63进行化学反应；反应生成613.47kg硫酸镉、860.74kg硫酸铜及盐酸的混合溶液；Step D, the filtrate (calculated as cadmium chloride) obtained by filtering in step C is sent into the second corrosion-resistant reactor 6, and sulfuric acid is carried out chemical reaction with pure mass ratio 1: 0.63; Reaction generates 613.47kg cadmium sulfate, 860.74kg sulfuric acid Mixed solution of copper and hydrochloric acid;
步骤E、步骤D中所得反应产物用第二过滤器7进行过滤，得到的滤饼杂质焚烧、深埋；The reaction product obtained in step E and step D is filtered with the second filter 7, and the obtained filter cake impurities are incinerated and buried deeply;
步骤F、步骤E中所得的滤液依次经过减压蒸馏器8和冷却塔9，进行减压蒸馏和冷却，先后得到1037.34kg硫酸镉产品10和1346.58kg硫酸铜产品11；蒸馏剩下的盐酸返回步骤A中所述的第一耐腐蚀反应器4中循环使用。The filtrate obtained in step F, step E passes through vacuum distiller 8 and
上述实施例，只是本发明的较佳实施例，并非用来限制本发明实施范围，故凡以本发明权利要求所述的特征及原理所做的等效变化或修饰，均应包括在本发明权利要求范围之内。The above-described embodiments are only preferred embodiments of the present invention, and are not intended to limit the scope of the present invention. Therefore, all equivalent changes or modifications made with the features and principles described in the claims of the present invention should be included in the present invention. within the scope of the claims.
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| CN1084895A (en) * | 1992-09-30 | 1994-04-06 | 武汉市冶炼科研所 | Process for treating low-grade copper slag or copper oxide ore by ammonia leaching precipitation method |
| CN1095110A (en) * | 1993-05-11 | 1994-11-16 | 封瑞 | Method with direct production of cupric sulfate from cupric oxide ore |
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| CN1084895A (en) * | 1992-09-30 | 1994-04-06 | 武汉市冶炼科研所 | Process for treating low-grade copper slag or copper oxide ore by ammonia leaching precipitation method |
| CN1095110A (en) * | 1993-05-11 | 1994-11-16 | 封瑞 | Method with direct production of cupric sulfate from cupric oxide ore |
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| Title |
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| 李文郁等.从立德粉酸浸废渣制取硫酸铅的研究.《湖南化工》.1992,(第1期),32-34. * |
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