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发明公开
CN110624698A 一种从磁选精矿中回收磁黄铁矿的方法 无效 - 驳回

一种从磁选精矿中回收磁黄铁矿的方法
摘要：
本发明提出的是一种从磁选精矿中回收磁黄铁矿的方法。原矿在磨矿后，添加活化剂和捕收剂混选,经过分离浮选得到磁黄铁矿精矿和铁精矿选矿。所述活化剂采用井下酸水替代传统的活化剂草酸、硝酸、硫酸、盐酸。所述井下酸水中对磁黄铁矿起活化作用的有效成分为：Mn2+、H+、Cu2+、Fe2+、Fe3+离子。所述井下酸水用量为60kg/T。本发明采用通过用井下酸水替代传统的活化剂草酸、硝酸、硫酸、盐酸，提高对磁黄铁矿的活化作用，增强磁黄铁矿的可浮性，浮选分离后，铁精矿含硫可以降低至2.0%以下，铁精矿品位52%，含锰9%，出售到锰冶炼厂，经济价值大幅度提高。适宜作为一种从磁选精矿中回收磁黄铁矿的方法应用。
摘要（英）：

The invention provides a method for recovering pyrrhotite from magnetic concentrate. According to the method, after raw ore is ground, an activating agent and a collecting agent are added for mixed separation, and pyrrhotite concentrate and iron ore concentrate are obtained through separation flotation for beneficiation. The activating agent is prepared through replacing traditional activating agent oxalic acid, nitric acid, sulfuric acid and hydrochloric acid with underground acid water. The active ingredients inthe underground acid water for activating pyrrhotite are Mn < 2 + >, H < + >, Cu< 2 + >, Fe < 2 + > and Fe < 3 + > ions, and the dosage of the underground acid water is 60kg/T. According to the method, traditional activating agents oxalic acid, nitric acid, sulfuric acid and hydrochloric acid are replaced by underground acid water, the activation effect on pyrrhotite is improved, the floatability of pyrrhotite is enhanced, after flotation separation, the sulfur content of theiron ore concentrate can be reduced to 2.0% or below, the iron ore concentrate grade is 52%, the manganese content is 9%, the iron ore concentrate is sold to a manganese smelting plant, and the economic value is greatly improved. The method is suitable for recovering pyrrhotite from magnetic concentrate.

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