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1. 发明专利

JPS598621A Method for precipitating arsenic sulfide precipitate from waste liquor containing arsenic 失效
标题翻译：用于从含有ARSENIC的废液中预处理硫酸盐沉淀物的方法
公开(公告)号：JPS598621A
公开(公告)日：1984-01-17
申请号：JP11592182
申请日：1982-07-03
申请人： Nippon Mining Co Ltd
发明人： HIRABAYASHI SHIYUN , SATOU YUKIYASU , KIMURA TAKASHI
IPC分类号： C01G28/00 , C02F1/58 , C02F1/62
摘要： PURPOSE: To precipitate the separate As as As
2 S
3 at a low cost, by bringing an acidic waste liquor containing As into contact with a substance capable of generating SO
2 on contact with an acid and a sulfiding substance at the same time.
CONSTITUTION: An acidic waste liquor 2 containing As, e.g. As
2 O
3 , etc. and H
2 SO
4 , etc., a substance 3 capable of generating SO
2 on contact with an acid, e.g. NaHSO
3 , and a sulfiding agent 4, e.g. NaSH, are simultaneously fed to almost the same place in a reaction vessel 1, and the resultant mixture is agitated with an agitator 6 to precipitate and separate the As as As
2 S
3 . The reaction mixture is then taken out of a discharge outlet 5. Thus, the molar ratio (S/As) in the resultant sulfide precipitate can be improved, and the energy cost can be reduced with the reduced cost of the apparatus.
COPYRIGHT: (C)1984,JPO&Japio
摘要翻译：目的：为了以低成本沉淀分离的As As2S3，通过使含有As的酸性废液与能够同时与酸和硫化物接触的能产生SO 2的物质接触。构成：含有As的酸性废液2，例如 As 2 O 3等和H 2 SO 4等，能够与酸接触时产生SO 2的物质3，例如， NaHSO 3和硫化剂4，例如 NaSH同时加入到反应容器1中的几乎相同的位置，并将所得混合物用搅拌器6搅拌沉淀并将As分离为As 2 S 3。然后将反应混合物从排出口5取出。因此，可以提高所得硫化物沉淀物中的摩尔比（S / As），并且可以降低设备成本，从而降低能量成本。

2. 发明专利

JPS598622A Hydrothermal treating method for precipitate containing arsenic sulfide 失效
标题翻译：用于含硫酸钠的预处理方法
公开(公告)号：JPS598622A
公开(公告)日：1984-01-17
申请号：JP11592282
申请日：1982-07-03
申请人： Nippon Mining Co Ltd
发明人： HIRABAYASHI SHIYUN , SATOU YUKIYASU , KIMURA TAKASHI
IPC分类号： C01G28/00 , B09B3/00 , C02F11/00 , G21F9/30
摘要： PURPOSE: To form arsenic sulfide precipitates efficiently and uniformly into lumps of high density, by heating the arsenic sulfide precipitates containing the arsenic sulfide at a temperature below the softening point under atmospheric pressure or above, and subjecting the resultant heat-treated precipitates to the hydrothermal treatment.
CONSTITUTION: Precipitates, containing arsenic sulfide, and obtained by sulfiding a waste liquor containing arsenic, etc. are kept under heating at a temperature below the softening point thereof under atmospheric pressure or below, and then the pressure is reduced to ordinary pressure. The above-mentioned step is repeated if necessary once or more, and the moisture in the precipitates is boiled to deaerate fully the air contained in the interior thereof. The resultant heat- treated precipitates are then subjected to the hydrothermal treatment at the softening temperature thereof or above and the melting point thereof or below. Thus, the precipitates containing the arsenic sulfide can be uniformly formed into lumps of high density without leaving unlumped parts in the interior thereof.
COPYRIGHT: (C)1984,JPO&Japio
摘要翻译：目的：通过在低于大气压以上的软化点的温度下加热含有硫化砷的硫化砷沉淀物，将高效均匀地形成硫化砷沉淀物，并将所得热处理的沉淀物进行水热处理治疗。构成：在含有砷的废液中通过硫化含有砷的废液得到的沉淀物在大气压以下在低于其软化点的温度下保持加热，然后压力降低至常压。如果必要，重复上述步骤一次或多次，并且将沉淀物中的水分煮沸以使其内部的空气充分脱气。然后将所得热处理的沉淀物在其软化温度以上及其熔点以下进行水热处理。因此，含有硫化砷的析出物可以均匀地形成为高密度的块体，而不会在其内部留下未光亮的部分。

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