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Medkoo抑制劑在銅礦浮選工藝中的應(yīng)用
發(fā)布時間： 2021-03-25 點(diǎn)擊次數(shù)： 1078次Medkoo抑制劑種類很多，應(yīng)用很廣。如催化反應(yīng)的負(fù)催化劑，高分子化合物的阻聚劑，塑料、橡膠、油脂等的抗氧劑，泡沫抑制劑，汽油的抗震劑，防腐蝕的緩沖劑等。如抗氧劑是食品、橡膠及其他有機(jī)物質(zhì)中的氧化反應(yīng)的抑制劑；食品中加入水楊酸是酸敗的抑制劑；某些聚合物中加入紫外線抑制劑防止因吸收紫外光而變質(zhì)；有機(jī)磷酯是體內(nèi)膽堿酯酶的抑制劑。某些聚合物的單體在貯存和運(yùn)輸期間，為了防止其自聚合，需要加入抑制劑。Medkoo抑制劑的實(shí)驗(yàn)原理：酶的活性常受到某些物質(zhì)影響，有些物質(zhì)能增加酶的活性，稱為酶的激活劑；另一些物質(zhì)則降低酶的活性，稱為抑制劑。很少量的抑制劑就會影響酶的活性，而且常具有特異性。酶的催化作用受溫度的影響，在最適溫度下，酶的反應(yīng)速度最大，大多數(shù)動物酶的最適溫度為37－40℃。植物酶的最適溫度為50－60℃。酶對溫度的穩(wěn)定性與其存在形式有關(guān)，有些酶的干燥劑，雖加熱到100℃，其活性并無明顯改變，但在100℃的溶液中卻很快的*失去活性。低溫能降低或抑制酶的活性，但不能使酶失活。礦業(yè)抑制劑：浮游選礦時增加礦粒潤濕性而使不易附著于氣泡上的物質(zhì)。可以是無機(jī)化合物如石灰等，或有機(jī)化合物如淀粉、膠類等。抑制劑在銅礦浮選工藝中的應(yīng)用混合段的“壓硫”抑制劑為石灰，加在二段磨礦的泵池內(nèi)；選銅系統(tǒng)的抑制鋅（以下簡稱壓鋅）的組合抑制劑主要為硫酸鋅+亞硫酸鈉，實(shí)行分段添加，先在再磨機(jī)添加活性炭和硫化鈉脫藥，然后在銅鋅分離的一次粗選、三次掃選、三次精選作業(yè)中分段添加硫酸鋅+亞硫酸鈉；選鋅系統(tǒng)的壓硫抑制劑為石灰。
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