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Calcium and magnesium separation method for dolomite
The invention relates to a dolomite calcium and magnesium separation method which comprises the following steps: grinding dolomite to a preset particle size to obtain dolomite powder; calcining the dolomite powder at 720-800 DEG C to obtain a calcined dolomite material; adding water into the calcined dolomite to digest to obtain digested ore pulp; a hydrophobic modifier acting on magnesium hydroxide is added into the digested ore pulp, the digested ore pulp is stirred and aged, and aged ore pulp is obtained; and after an inhibitor, a collecting agent and a foaming agent are added into the aged ore pulp, flotation is conducted, and flotation foam enriched with magnesium hydroxide and flotation tailings enriched with calcium carbonate are obtained. The calcination temperature is lower than that of an existing process, and energy consumption is low; magnesium hydroxide is enriched in flotation froth, calcium carbonate is enriched in flotation tailings, and the calcium-magnesium separation effect is good.
本申请涉及一种白云石钙镁分离方法，包括如下步骤：研磨白云石至预定粒度，得到白云石粉料；在720‑800℃下煅烧所述白云石粉料，得到白云石煅后料；向所述白云石煅后料加入水进行消化，获得消化矿浆；向所述消化矿浆中加入作用于氢氧化镁的疏水改性剂，对所述消化矿浆搅拌、陈化，得到陈化矿浆；向所述陈化矿浆中加入抑制剂、捕收剂和起泡剂后进行浮选，获取富集有氢氧化镁的浮选泡沫和富集有碳酸钙的浮选尾矿。本申请煅烧温度低于现有工艺，能耗较低；氢氧化镁在浮选泡沫中富集、碳酸钙在浮选尾矿中富集，钙镁分离效果好。
Calcium and magnesium separation method for dolomite
The invention relates to a dolomite calcium and magnesium separation method which comprises the following steps: grinding dolomite to a preset particle size to obtain dolomite powder; calcining the dolomite powder at 720-800 DEG C to obtain a calcined dolomite material; adding water into the calcined dolomite to digest to obtain digested ore pulp; a hydrophobic modifier acting on magnesium hydroxide is added into the digested ore pulp, the digested ore pulp is stirred and aged, and aged ore pulp is obtained; and after an inhibitor, a collecting agent and a foaming agent are added into the aged ore pulp, flotation is conducted, and flotation foam enriched with magnesium hydroxide and flotation tailings enriched with calcium carbonate are obtained. The calcination temperature is lower than that of an existing process, and energy consumption is low; magnesium hydroxide is enriched in flotation froth, calcium carbonate is enriched in flotation tailings, and the calcium-magnesium separation effect is good.
本申请涉及一种白云石钙镁分离方法，包括如下步骤：研磨白云石至预定粒度，得到白云石粉料；在720‑800℃下煅烧所述白云石粉料，得到白云石煅后料；向所述白云石煅后料加入水进行消化，获得消化矿浆；向所述消化矿浆中加入作用于氢氧化镁的疏水改性剂，对所述消化矿浆搅拌、陈化，得到陈化矿浆；向所述陈化矿浆中加入抑制剂、捕收剂和起泡剂后进行浮选，获取富集有氢氧化镁的浮选泡沫和富集有碳酸钙的浮选尾矿。本申请煅烧温度低于现有工艺，能耗较低；氢氧化镁在浮选泡沫中富集、碳酸钙在浮选尾矿中富集，钙镁分离效果好。
Calcium and magnesium separation method for dolomite
一种白云石钙镁分离方法
MENG HAOJIE (author) / LI FENG (author) / BAI YANG (author) / CHEN QINGFENG (author) / WANG XINJIAN (author) / CHU BINGWU (author)
2023-08-22
Patent
Electronic Resource
Chinese
IPC:
C01F
COMPOUNDS OF THE METALS BERYLLIUM, MAGNESIUM, ALUMINIUM, CALCIUM, STRONTIUM, BARIUM, RADIUM, THORIUM, OR OF THE RARE-EARTH METALS
,
Verbindungen der Metalle Beryllium, Magnesium, Aluminium, Calcium, Strontium, Barium, Radium, Thorium oder der Seltenen Erden
/
B03D
Schaumschwimmaufbereitungsverfahren [Flotation]
,
FLOTATION
/
C04B
Kalk
,
LIME
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