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一、羧甲基纤维素在湿法炼锌中的应用锌精矿焙烧后的焙砂中,往往含有一部分可溶性硅酸盐。这部分硅酸盐在浸出过程中大约有40～60%先溶解,随后又沉淀下来。如果浸出条件控制不好,则会形成一种胶体状硅酸盐,严重影响浓密机中的沉淀状况和溢流溶液的压滤速度。有时甚至使新液供应不上,造成锌电解溶液的断流事故。朝鲜某冶炼厂为了解决这个问题,进行了用羧甲基纤维素加速沉降和过滤速度的试验。羧甲基纤维素(分子式为 ROCH_2COONa)是造纸
First, the application of carboxymethyl cellulose in wet Zinc Smelting roasted calcined zinc concentrate, often contains part of the soluble silicate. This part of the silicate in the leaching process, about 40 ~ 60% of the first dissolved, and then precipitated. If the leaching conditions are poorly controlled, a colloidal silicate is formed that severely affects the precipitation in the thickener and the press-down rate of the overflow solution. Sometimes even the new liquid supply is not on, resulting in the interruption of zinc electrolysis solution. In order to solve this problem, a smelter in North Korea conducted a test of accelerating sedimentation and filtration rate with carboxymethyl cellulose. Carboxymethyl cellulose (molecular formula ROCH_2COONa) is paper