A method for processing molten slag in copper-phosphorus solder
A copper-phosphorus solder and processing method technology, applied in welding/cutting media/materials, welding equipment, manufacturing tools, etc., can solve problems such as cracking, decrease in brazing seam strength, and lower yield of copper-phosphorus solder, and achieve separation Good effect, high adsorption efficiency, and the effect of improving reduction efficiency
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Embodiment 1
[0030] The grade of brazing material is BCu93P, which is the most used in the market, with a weight of 300kg per furnace and 50 furnaces for smelting. After covering the slag with sawdust, 84.6kg of scum was obtained through separation. After the scum is solidified and cooled, use a ball mill to grind the scum into scum powder, and the particle size of the scum powder after ball milling is 80-140 mesh. Prepare a certain concentration of acid solution, in which hydrochloric acid accounts for 20%, nitric acid accounts for 30%, put scum powder, heat and stir continuously, the heating temperature is 80 ℃, until it is completely dissolved, and the activated carbon powder floats on the surface of the solution. Activated carbon powder is filtered out, dried to a humidity of 1% to 5%, and 25.3kg of activated carbon powder is obtained. The scum waste liquid is neutralized with 48% potassium hydroxide solution until the pH value is 8.0-9.0, and the neutralization process is stopped, an...
Embodiment 2
[0032] The grade of brazing material is BCu93P, which is the most used in the market, with a weight of 300kg per furnace and 50 furnaces for smelting. After covering the slag with sawdust, 81.4kg of scum was obtained through separation. After the scum is solidified and cooled, use a ball mill to grind the scum into scum powder, and the particle size of the scum powder after ball milling is 80-140 mesh. Prepare a certain concentration of acid solution, in which hydrochloric acid accounts for 20%, nitric acid accounts for 30%, put scum powder, heat and stir continuously, the heating temperature is 80 ℃, until it is completely dissolved, and the activated carbon powder floats on the surface of the solution. Activated carbon powder was filtered out, and dried to a humidity of 1% to 5%, to obtain 21.2kg of activated carbon powder. The scum waste liquid is neutralized with 48% potassium hydroxide solution until the pH value is 8.0-9.0, and the neutralization process is stopped, and...
Embodiment 3
[0034]The grade of brazing material is BCu93P, which is the most used in the market, with a weight of 300kg per furnace and 50 furnaces for smelting. After covering the slag with sawdust, 85.3kg of scum was obtained through separation. After the scum is solidified and cooled, use a ball mill to grind the scum into scum powder, and the particle size of the scum powder after ball milling is 80-140 mesh. Prepare a certain concentration of acid solution, in which hydrochloric acid accounts for 20%, nitric acid accounts for 30%, put scum powder, heat and stir continuously, the heating temperature is 80 ℃, until it is completely dissolved, and the activated carbon powder floats on the surface of the solution. The activated carbon powder is filtered out, dried to a humidity of 1% to 5%, and 23.7kg of activated carbon powder is obtained. The scum waste liquid is neutralized with 48% potassium hydroxide solution until the pH value is 8.0-9.0, and the neutralization process is stopped,...
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