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安德拉邦东戈达瓦里地方布鲁古班达区与榴英硅线变岩(含石榴石硅线石片麻岩)共生的石墨片岩须作可选性研究。给料中的含碳量介于17～25%之间。为了得到最高的石墨精矿回收率,不同粒级的物料须经浮选试验,采用松油和煤油作起泡剂、水玻璃作抑制剂以及氢氧化钠和碳酸钠作pH值的调节剂。不同粒级的物料在不同化学药剂的作用下,可以获得不同的浮选产物。而所获含碳65%的产物须用水玻璃和煤油分别作抑制剂和起泡剂进行精浮选。然后再把含固定碳85.6%的产物用40%氢氟酸浸洗,使含碳量达到99%。
Indosinian eastern Godavari local Broughuabandu area and garnet silanite (including garnet sillimanite) symbiosis of graphite schist be made optional study. The carbon content of the feed is between 17 and 25%. In order to get the highest recovery rate of graphite concentrate, the different size of the material to be flotation test, the use of pine oil and kerosene as a foaming agent, water glass as an inhibitor and sodium hydroxide and sodium carbonate pH regulator. Different fractions of different materials in the role of chemicals, you can get different flotation products. The resulting 65% carbon content of the product shall be water glass and kerosene were inhibitors and foaming agent for fine flotation. Then the product containing 85.6% of the fixed carbon was dipped in 40% hydrofluoric acid to bring the carbon content to 99%.