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澆鑄銅鉛合金时,需用大量的硼砂。硼砂用过后,里面帶有污泥和銅鉛合金渣子,因此过去都把它倒掉。我厂張清寿同志采用了沉淀法回收廢硼砂,可以回收50％,而且質量很好。先把廢硼砂碾碎,放进开水鍋中(150公斤廢硼砂灰比100加侖水),煮沸10分鐘后,就关閉爐門,使鍋里水的温度逐漸下降到50℃(手放入水中不觉得燙),保温14～18小时,这时泥土和銅鉛合金渣已沉到下面去,硼砂还溶解在水中。將硼砂水倒入大鉄桶內,鍋底的渣滓倒掉。硼砂水在鉄桶中,
When casting copper-lead alloy, a large amount of borax is required. Borax used, with sludge and copper-lead alloy slag, so in the past it was drained. Our factory Zhang Qingshou comrades adopted the precipitation method to recover waste borax, can recover 50%, and the quality is very good. Blow the waste borax into the boiling pot (150 kg borax waste than 100 gallons of water), boiled for 10 minutes, the door closed, so that the water temperature gradually dropped to 50 ℃ (hand into Water does not feel hot), insulation 14 ~ 18 hours, when the soil and copper-lead alloy slag has been sinking to go below, borax is also dissolved in water. Pour the borax water into the bucket, the bottom of the pot drained. Borax water in the bucket,