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1. 发明专利

JPS6140286B2 失效
公开(公告)号：JPS6140286B2
公开(公告)日：1986-09-08
申请号：JP20094882
申请日：1982-11-16
申请人： MITSUBISHI METAL CORP
发明人： SHIBAZAKI TAKEYOSHI , NOJIMA SHIZUO , ISHIWATARI MASAHARU
IPC分类号： C22B11/02

2. 发明专利

JPS5276295A ELIMINATION OF MERCURY FROM SULFURIC ACID 失效
公开(公告)号：JPS5276295A
公开(公告)日：1977-06-27
申请号：JP15316375
申请日：1975-12-22
申请人： MITSUBISHI METAL CORP
发明人： NOJIMA SHIZUO , IKEDA ITSUSEI
IPC分类号： C01B17/90
摘要： PURPOSE:A method to eliminate mercury to a restricted value or lower by simple treatment, which is to add a compound that produce bromine in sulfuric acid and to eliminate precipitate of copper bromide absorbing mercury bromide on it, after the addition of copper in sulfuric acid containing mercury.

3. 发明专利

JPS6246498B2 失效
公开(公告)号：JPS6246498B2
公开(公告)日：1987-10-02
申请号：JP977283
申请日：1983-01-24
申请人： MITSUBISHI METAL CORP
发明人： SHIBAZAKI TAKEMI , NOJIMA SHIZUO , MOCHIDA HIROMI
IPC分类号： C22B11/00 , C01G30/00 , C22B30/00

4. 发明专利

JPS6135252B2 失效
公开(公告)号：JPS6135252B2
公开(公告)日：1986-08-12
申请号：JP18066283
申请日：1983-09-30
申请人： MITSUBISHI METAL CORP
发明人： NOJIMA SHIZUO , MOCHIDA HIROMI
IPC分类号： C22B30/06

5. 发明专利

JPS5879830A PURIFICATION OF NICKEL SULFATE AQUEOUS SOLUTION 失效
公开(公告)号：JPS5879830A
公开(公告)日：1983-05-13
申请号：JP17788081
申请日：1981-11-06
申请人： MITSUBISHI METAL CORP
发明人： NOJIMA SHIZUO , KIMURA ETSUJI , OONO ZENICHIROU , ISHIWATARI MASAHARU
IPC分类号： C01G53/10
摘要： PURPOSE:Nickel sulfate aqueous solution is subjected to oxidative treatment and combined with an alkali substance to remove iron, then an inert solvent containing a nickel salt of organophosphate is added to remove easily impurities and obtain high-purity nickel sulfate. CONSTITUTION:Nickel sulfate aqueous solution containing Fe , Cu , Zn is subjected to oxidative treatment such as aeration to convert Fe into Fe . Then, an alkali substance such as powdery nickel carbonate is added to adjust the pH to 4-6 to convert Fe into ferric hydroxide, which is removed as a precipitate. An inert organic solvent containing a nickel salt of organophosphate or organocarboxylate, for example, a nickel-containing di(2-ethylhexyl)phosphate- kerosine solution is added to remove Cu , Zn by extraction. This process permits the easy removal of impurities without loss of nickel, resulting in purification of nickel sulfate aqueous solution.

6. 发明专利

JPS5589436A REMOVING METHOD OF MERCURY AND SELENIUM FROM SULFURIC ACID SLUDGE 失效
公开(公告)号：JPS5589436A
公开(公告)日：1980-07-07
申请号：JP16010278
申请日：1978-12-27
申请人： MITSUBISHI METAL CORP
发明人： KUBO TETSUO , KANEKO FUKUZOU , OONO ZENICHIROU , NOJIMA SHIZUO
IPC分类号： C22B43/00 , C01B19/00 , C22B7/00 , C22B7/02 , C22B13/00
摘要： PURPOSE:To conduct Hg and Se recovery from sludge with high yield by a method wherein sulfuric acid sludge which contains Hg and Se is treated by attrition method in solution made acidic by sulfuric acid and then processed by floatation selection. CONSTITUTION:Sulfuric acid sludge which contains Hg and Se is formed in preparing sulfuric acid from SO2 gas produced in non-ferrous metal smelting process. Such sludge is treated with attrition in acid sulfuric solution and subject to flotation in acid at pH3 or less. At this time, MIBC is used as foaming agent and Aerofloate No.208 as collector. Selenide of Hg is recovered as floatation concentrate in a high yield. Settled tailing, if it contains 0.004% or more Hg concentration, is treated by sulfurizing using a sulfurizer such as hydrogen sulfide, sodium sulfide, sodium thiosulfate. The tailing is then retreated by floatation to form sulfide floatation material and tamade as floatation repeat material, together with refined tailing produced in floation cleaning.

7. 发明专利

JPS6047335B2 JPS6047335B2 - 失效
公开(公告)号：JPS6047335B2
公开(公告)日：1985-10-21
申请号：JP16010278
申请日：1978-12-27
申请人： Mitsubishi Metal Corp
发明人： KUBO TETSUO , KANEKO FUKUZO , OONO ZENICHIRO , NOJIMA SHIZUO
IPC分类号： C22B43/00 , C01B19/00 , C22B7/00 , C22B7/02 , C22B13/00
CPC分类号： Y02P10/212

8. 发明专利

JPS59137319A Pretreatment of rich lead 失效
标题翻译：预防精益求精
公开(公告)号：JPS59137319A
公开(公告)日：1984-08-07
申请号：JP977283
申请日：1983-01-24
申请人： Mitsubishi Metal Corp
发明人： SHIBAZAKI TAKEMI , NOJIMA SHIZUO , MOCHIDA HIROMI
IPC分类号： C22B11/00 , C01G30/00 , C22B30/00
摘要： PURPOSE: To remove separately As and Sb from rich lead and to make them suitable for industrial use by melting the rich lead under reduced pressure to evaporate most of As, and removing the residual As by the conventional Harris process.
CONSTITUTION: Rich lead obtd. from slime produced in a stage for electrolyzing lead is melted by keeping at ≥600°C under reduced pressure. Most of As in the molten rich lead is evaporated under reduced pressure, and the residual As is removed by the conventional Harris process. In the conventional treatment of rich lead, As and Sb are removed by oxidation and volatilization, and Pb and Bi are then oxidized and removed by cupellation to obtain crude silver. The oxidized flue cinder is a mixture of Sb
2 O
3 with As
2 O
3 , so it is not suitable for industrial use as it is. By this method, As and Sb can be removed separately, and pure Sb
2 O
3 can be obtd.
COPYRIGHT: (C)1984,JPO&Japio
摘要翻译：目的：从丰富的铅中分别除去As和Sb，并通过在较低压力下熔化富铅，蒸发大部分As，并通过常规Harris工艺除去残余As，使其适合工业用途。宪法：丰富的铅来自在电解铅的阶段中产生的粘土在减压下保持在> = 600℃下熔化。熔融富铅中的大部分As在减压下蒸发，并且通过常规哈里斯法除去残余的As。在常规的富铅处理中，通过氧化和挥发除去As和Sb，然后通过铜银氧化和除去Pb和Bi，得到粗银。氧化烟道渣是Sb2O3与As2O3的混合物，因此不适用于工业用途。通过这种方法，可以单独除去As和Sb，可以获得纯Sb2O3。

9. 发明专利

JPS5993843A TREATMENT OF RAW MATERIAL CONTAINING SILVER 失效
公开(公告)号：JPS5993843A
公开(公告)日：1984-05-30
申请号：JP20094882
申请日：1982-11-16
申请人： MITSUBISHI METAL CORP
发明人： SHIBAZAKI TAKEYOSHI , NOJIMA SHIZUO , ISHIWATARI MASAHARU
IPC分类号： C22B11/02
摘要： PURPOSE:To absorb gold and silver at a high yield in formed crude lead by compounding the smallest possible amt. of a lead raw material with silver concentrate contg. arsenic in a high rate, and reducing the same by melting. CONSTITUTION:A lead raw material contg. lead in the form of oxide at 10-100 times of the content of silver contd. in a raw material contg. gold, silver and arsenic and a reducing agent is added to the raw material and the mixture is reduced by melting so that gold and silver are absorbed in the formed crude lead. The amt. of the reducing agent to be added is so adjusted that the lead in the slag formed in this stage maintains >=3.5% grade, thereby migrating the arsenic in the raw material into the crude lead. The silver grade in the formed crude lead is increased to about >=1% if the amt. of the lead raw material to be added is limited in the above-mentioned way. The growth of a speiss phase is prevented if the lead grade of the formed slag is limited and the amt. of the reducing agent to be added is controlled. As a result, the migration rate of silver to crude lead is improved.

10. 发明专利

JPS58114728A MERCURY REMOVING AGENT AND ITS PRODUCTION 失效
公开(公告)号：JPS58114728A
公开(公告)日：1983-07-08
申请号：JP20970981
申请日：1981-12-28
申请人： MITSUBISHI METAL CORP
发明人： NOJIMA SHIZUO , KIMURA ETSUJI , IKEDA KAZUMASA
IPC分类号： B01D53/64 , B01D53/34 , B01J20/02 , B01J20/28
摘要： PURPOSE:To produce a removing agent for a trace of Hg vapor in gases at a low cost by passing gaseous H2S through an Se-contg. soln. dispersed therein with S powder to coat the surfaces of the S powder with SeS and depositing said powder on the surfaces of inorg. carriers. CONSTITUTION:Powder of S is dispersed at ratio on the surfaces of inorg. carriers such as pumice, whereby a mercury removing agent is prepd. The mercury removing agent which removes an extremely trace of Hg vapor contained in gases with good efficiency is produced at a low cost.

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