Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
NON-FERROUS SMELTING SLAG TREATMENT METHOD
PROBLEM TO BE SOLVED: To provide a non-ferrous smelting slag treatment method for effectively removing impurities such as As from copper smelting slag without adding metallic copper.SOLUTION: A non-ferrous smelting slag treatment method includes the steps of: adding an iron-containing material and a carbon-containing material to non-ferrous smelting slag containing 0.1 to 5 mass% As in the form of a compound having one or more oxidation number and 0.5 to 5 mass% Cu in the form of a compound having one or more oxidation number as well as Fe in the form of a compound having one or more oxidation number to melt the non-ferrous smelting slag in the coexistence of the added iron-containing material and carbon-containing material in order to reduce Fe, As, and Cu contained in the slag; and removing the reduced As and Cu from the slag together with the reduced Fe by gravity separation to obtain purified slag having an As content of less than 0.05 mass% and a Cu content of less than 0.5 mass%.SELECTED DRAWING: Figure 1
【課題】金属銅を添加することなく、銅製錬スラグから効果的にＡｓ等の不純物を除去するための非鉄製錬スラグの処理方法を提供する。【解決手段】酸化数が１以上の化合物の形態にあるＦｅの他に、酸化数が１以上の化合物の形態にあるＡｓを０．１〜５質量％及び酸化数が１以上の化合物の形態にあるＣｕを０．５〜５質量％含有する非鉄製錬スラグに対して鉄含有材料及び炭素含有材料を添加し、添加した鉄含有材料及び炭素含有材料の共存下で非鉄製錬スラグを溶融処理し、当該スラグ中に含まれるＦｅ、Ａｓ及びＣｕを還元する工程と、次いで、比重分離により前記スラグから還元されたＡｓ及びＣｕを還元されたＦｅと共に除去し、Ａｓ含有量が０．０５質量％未満、Ｃｕ含有量が０．５質量％未満である浄化スラグを得る工程とを含む非鉄製錬スラグの処理方法。【選択図】図１
NON-FERROUS SMELTING SLAG TREATMENT METHOD
PROBLEM TO BE SOLVED: To provide a non-ferrous smelting slag treatment method for effectively removing impurities such as As from copper smelting slag without adding metallic copper.SOLUTION: A non-ferrous smelting slag treatment method includes the steps of: adding an iron-containing material and a carbon-containing material to non-ferrous smelting slag containing 0.1 to 5 mass% As in the form of a compound having one or more oxidation number and 0.5 to 5 mass% Cu in the form of a compound having one or more oxidation number as well as Fe in the form of a compound having one or more oxidation number to melt the non-ferrous smelting slag in the coexistence of the added iron-containing material and carbon-containing material in order to reduce Fe, As, and Cu contained in the slag; and removing the reduced As and Cu from the slag together with the reduced Fe by gravity separation to obtain purified slag having an As content of less than 0.05 mass% and a Cu content of less than 0.5 mass%.SELECTED DRAWING: Figure 1
【課題】金属銅を添加することなく、銅製錬スラグから効果的にＡｓ等の不純物を除去するための非鉄製錬スラグの処理方法を提供する。【解決手段】酸化数が１以上の化合物の形態にあるＦｅの他に、酸化数が１以上の化合物の形態にあるＡｓを０．１〜５質量％及び酸化数が１以上の化合物の形態にあるＣｕを０．５〜５質量％含有する非鉄製錬スラグに対して鉄含有材料及び炭素含有材料を添加し、添加した鉄含有材料及び炭素含有材料の共存下で非鉄製錬スラグを溶融処理し、当該スラグ中に含まれるＦｅ、Ａｓ及びＣｕを還元する工程と、次いで、比重分離により前記スラグから還元されたＡｓ及びＣｕを還元されたＦｅと共に除去し、Ａｓ含有量が０．０５質量％未満、Ｃｕ含有量が０．５質量％未満である浄化スラグを得る工程とを含む非鉄製錬スラグの処理方法。【選択図】図１
NON-FERROUS SMELTING SLAG TREATMENT METHOD
非鉄製錬スラグの処理方法
HATANO KAZUHIRO (Autor:in) / NAKAJIMA KOTA (Autor:in)
10.11.2016
Patent
Elektronische Ressource
Japanisch
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