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A platform for research: civil engineering, architecture and urbanism
METHOD FOR PRODUCTION OF WATER-GRANULATED SLAG
PROBLEM TO BE SOLVED: To provide a production method for water-granulated slag, capable of safely performing without needing new classifying facility or a special water-granulation launder and without increasing a risk of phreatic explosion or the like, and capable of optionally adjusting the grain size of the slag.SOLUTION: There is provided a method for producing a water-granulated slag by contacting with water, the molten slag generated in a copper smelting process to cool and pulverize without classifying. Based on the graph in which the relationship of the grain size of cumulative mass 50% of the water-granulated slag with the Pb appearance quality in the slag is previously plotted, the Pb appearance quality of the slag is obtained between 0.09 and 0.28 mass% from the grain size of the target cumulative mass 50% within a range of 1.10 to 1.60 mm. The raw material of the copper smelting process is prepared by adjusting the blending ratio of copper concentrate, miscellaneous raw materials and silicate ore being a flux so that the Pb appearance quality is obtained.SELECTED DRAWING: Figure 2
【課題】 新たな分級設備や特別な水砕樋を必要とせず、また水蒸気爆発等のリスクを増大させることなく安全に実施でき、粒径を任意に制御することができる水砕スラグの製造方法を提供する。【解決手段】 銅製錬工程によって生成される熔融スラグを水に接触させて冷却すると同時に粉砕することで分級を行うことなく水砕スラグを製造する方法であって、水砕スラグの累積質量５０％の粒径と該水砕スラグ中のＰｂ品位との関係を予めプロットしたグラフに基づいて、１.１０〜１.６０ｍｍの範囲内で目標とする水砕スラグの累積質量５０％の粒径から水砕スラグのＰｂ品位を０.０９〜０.２８質量％の間で求め、そのＰｂ品位となるように銅精鉱、雑原料及びフラックスの珪酸鉱の配合割合を調整して前記銅製錬工程の原料とする。【選択図】 図２
METHOD FOR PRODUCTION OF WATER-GRANULATED SLAG
PROBLEM TO BE SOLVED: To provide a production method for water-granulated slag, capable of safely performing without needing new classifying facility or a special water-granulation launder and without increasing a risk of phreatic explosion or the like, and capable of optionally adjusting the grain size of the slag.SOLUTION: There is provided a method for producing a water-granulated slag by contacting with water, the molten slag generated in a copper smelting process to cool and pulverize without classifying. Based on the graph in which the relationship of the grain size of cumulative mass 50% of the water-granulated slag with the Pb appearance quality in the slag is previously plotted, the Pb appearance quality of the slag is obtained between 0.09 and 0.28 mass% from the grain size of the target cumulative mass 50% within a range of 1.10 to 1.60 mm. The raw material of the copper smelting process is prepared by adjusting the blending ratio of copper concentrate, miscellaneous raw materials and silicate ore being a flux so that the Pb appearance quality is obtained.SELECTED DRAWING: Figure 2
【課題】 新たな分級設備や特別な水砕樋を必要とせず、また水蒸気爆発等のリスクを増大させることなく安全に実施でき、粒径を任意に制御することができる水砕スラグの製造方法を提供する。【解決手段】 銅製錬工程によって生成される熔融スラグを水に接触させて冷却すると同時に粉砕することで分級を行うことなく水砕スラグを製造する方法であって、水砕スラグの累積質量５０％の粒径と該水砕スラグ中のＰｂ品位との関係を予めプロットしたグラフに基づいて、１.１０〜１.６０ｍｍの範囲内で目標とする水砕スラグの累積質量５０％の粒径から水砕スラグのＰｂ品位を０.０９〜０.２８質量％の間で求め、そのＰｂ品位となるように銅精鉱、雑原料及びフラックスの珪酸鉱の配合割合を調整して前記銅製錬工程の原料とする。【選択図】 図２
METHOD FOR PRODUCTION OF WATER-GRANULATED SLAG
水砕スラグの製造方法
KOBAYASHI JUNICHI (author) / SASAI SHIGERU (author) / KAWANAKA KAZUAKI (author)
2016-12-08
Patent
Electronic Resource
Japanese
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