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Demagging and manganese reducing phosphorus direct-reverse flotation technology of low-grade manganic phosphorite ore

A technology of reducing manganese and phosphorus with magnesium, positive and negative flotation, applied in flotation, solid separation, etc., can solve problems such as uneconomical, high content of MgO and MnO impurities in phosphorus concentrate, difficulty in removing harmful impurities of magnesium and manganese, and achieve effective Sorting and improving the effect of beneficiation recovery

Inactive Publication Date: 2018-12-14
湖北省黄麦岭磷化工有限责任公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Low-grade manganese phosphorite ore is directly flotation, and the impurities MgO and MnO in the obtained phosphorus concentrate are high, which has a significant impact on the quality of phosphoric acid produced by the phosphorus chemical industry, and the harmful impurities of magnesium and manganese in the subsequent phosphorus chemical industry are removed. difficult and uneconomical

Method used

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  • Demagging and manganese reducing phosphorus direct-reverse flotation technology of low-grade manganic phosphorite ore

Examples

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Effect test

Embodiment 1

[0027] A low-grade manganese phosphorite ore process for removing magnesium and reducing manganese and phosphorus. The phosphorus forward flotation process includes: crushing and grinding low-grade manganese phosphorite ore to obtain Ore pulp, fineness -0.074mm accounts for 68%, control the temperature of the ore pulp at 40°C, add soda ash regulator to the ore pulp to adjust the pH value of the ore pulp to 9.8, add water glass (the amount of water glass is 1.0kg / t relative to the amount of raw ore ), then add sodium stearate (the addition of sodium stearate is 0.9kg / t relative to the amount of raw ore) and foaming agent sodium alkylbenzene sulfonate (the addition of foaming agent alkylbenzene sulfonate is relatively When the raw ore amount is 0.8kg / t), mix, stir and adjust slurry and utilize flotation machine to carry out aerated flotation, the foam product obtained is phosphorus coarse concentrate, and phosphorus coarse concentrate can be further selected (the further refined ...

Embodiment 2

[0030] A low-grade manganese apatite ore process for removing magnesium and manganese and phosphorus. The phosphorus positive flotation process includes: crushing and grinding the low-grade manganese apatite ore to obtain Ore pulp, fineness -0.074mm accounts for 65%, control the temperature of the ore pulp at 40°C, add soda ash regulator to the ore pulp to adjust the pH value of the ore pulp to 9.2, add water glass (the amount of water glass added is 0.7kg / t relative to the amount of raw ore ), then add sodium linoleate (the addition of sodium linoleate is 1.0kg / t relative to the amount of raw ore) and foaming agent triethyl-hydrogensilane (the addition of foaming agent triethyl-hydrogensilane is relatively When the raw ore amount is 0.7kg / t), mix, stir and adjust slurry and utilize flotation machine to carry out aerated flotation, the foam product obtained is phosphorus coarse concentrate, and phosphorus coarse concentrate can be further selected (the further refined The addi...

Embodiment 3

[0033] A low-grade manganese phosphorite ore process for removing magnesium and reducing manganese and phosphorus. The phosphorus forward flotation process includes: crushing and grinding low-grade manganese phosphorite ore to obtain Ore pulp, fineness -0.074mm accounts for 68%, control the temperature of the ore pulp at 40°C, add soda ash regulator to the ore pulp to adjust the pH value of the ore pulp to 9.8, add water glass (the amount of water glass is 1.0kg / t relative to the amount of raw ore ), then add sodium ricinoleate (the addition of sodium ricinoleate is 1.0kg / t relative to the amount of raw ore) and foaming agent polyethylene glycol ether (the addition of foaming agent polyethylene glycol ether is relative to the amount of raw ore amount is 0.6kg / t) to mix, stir slurry and utilize flotation machine to carry out aerated flotation, the foam product that obtains is phosphorus coarse concentrate, and phosphorus coarse concentrate can further be selected (the described ...

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Abstract

The invention provides a demagging and manganese reducing phosphorus direct-reverse flotation technology of low-grade manganic phosphorite ore. The technology comprises the steps that the low-grade manganic phosphorite ore is crushed and ground to obtain ore pulp, sodium carbonate is added into a direct flotation ore pulp tank, the pH value of the ore pulp is adjusted, then water glass, a phosphorus direct flotation collecting agent and a foaming agent are added into the tank and mixed, air flotation is performed, an obtained froth product is phosphorus rough concentrate, the phosphorus roughconcentrate is transferred into a concentrating tank for concentrating, an obtained froth product is direct flotation phosphorus concentrate, and a product in the tank is direct flotation tailings; and the direct flotation phosphorus concentrate is placed in a reverse flotation ore pulp stirring tank, sulfuric acid and phosphoric acid are added, the pH value of the ore pulp is adjusted, then a phosphorus reverse flotation collecting agent is added, stirring and pulp adjusting are performed, air flotation is performed, an obtained froth product is tailings containing magnesium and manganese, and a product in the tank is phosphorus concentrate. In alkalescent medium ore pulp, the phosphorus ore has the good floatability. In weakly acidic ore pulp, dolomite carbonate minerals have the good floatability while the floatability of phosphorus minerals is poor, and the phosphorus minerals and the dolomite carbonate minerals are effectively separated.

Description

technical field [0001] The invention belongs to the phosphate ore beneficiation technology, and in particular relates to a phosphorus forward-reverse flotation process for removing magnesium and manganese from low-grade manganese phosphorite ore. Background technique [0002] Phosphorus chemical industry is a sub-sector of chemical industry that uses phosphate rock as raw material to process the phosphorus element in the ore into products that can be used by people through chemical methods. Phosphate rock is one of the main basic raw materials of phosphorus chemical industry. [0003] According to the occurrence state of phosphate rock, the beneficiation technology of phosphate rock mainly adopts flotation, scrubbing and desliming, roasting and digestion, dense medium separation, chemical leaching and other technologies. Among them, phosphate rock flotation technology can be divided into direct positive flotation, single carbonate reverse flotation and positive and negative,...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B03D1/02B03D103/06
CPCB03D1/02B03D2203/06
Inventor 许昌伦李进高振华
Owner 湖北省黄麦岭磷化工有限责任公司
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