Reverse flotation process for synchronously removing silicon and magnesium impurities from collophanite and collecting agent of reverse flotation process

A collophosphate and reverse flotation technology, applied in flotation, solid separation and other directions, can solve the problem that the magnesium-bearing minerals and siliceous gangue minerals cannot be removed at the same time in the collophosphate, and reduce the dosage of flotation reagents, The effect of enhancing the removal effect and improving the sorting efficiency

Pending Publication Date: 2022-06-24
WUHAN INSTITUTE OF TECHNOLOGY +1
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to overcome the above-mentioned technical deficiencies, provide a reverse flotation process for synchronously removing silicon and magnesium impurities from collophosite and its collector, and solve the problem of magnesium-containing minerals and siliceous gangue minerals in collophosite in the prior art. Technical problems that cannot be removed at the same time

Method used

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  • Reverse flotation process for synchronously removing silicon and magnesium impurities from collophanite and collecting agent of reverse flotation process

Examples

Experimental program
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Effect test

Embodiment 1

[0051] For a siliceous calcium phosphate ore in Hubei, the raw ore P 2 O 5 Grade 26.18%, MgO content 2.86%, SiO 2 The content is 18.32%, which is processed according to the following process:

[0052] 1) Crushing the massive collophosphate ore to 1mm, and then grinding, the grinding fineness is -0.074mm, accounting for 87.3%, adding water to adjust the slurry concentration to 25%, and the temperature is about 20 ℃; adding the mass ratio to the slurry is 8:2 sulfur-phosphorus mixed acid was used as pH adjuster, the dosage was 3.2kg / t, and stirred for 0.5min; the mixture of starch and sodium pyrophosphate was added to the pulp as an inhibitor, and the dosage was 0.8kg / t, and stirred for 1min; then added Mixed collector 0.35kg / t for roughing by reverse flotation to obtain product A and foam product A in the tank, the content of MgO in the tank is 1.27%, SiO 2 The content is 13.36%, indicating that the silicon and magnesium impurities can be removed simultaneously. The mixed c...

Embodiment 2

[0058] For a siliceous calcium phosphate mine in Guizhou, the raw ore P 2 O 5 Grade 25.35%, MgO content 2.53%, SiO 2 The content is 21.71%, which is processed according to the following process method:

[0059] 1) Crushing the massive collophosphate ore to 1mm, and then grinding, the grinding fineness is -0.074mm, accounting for 84.8%, adding water to adjust the pulp concentration to 25%, and the temperature is about 20 ℃; adding the mass ratio to the pulp is 8:2 mixed acid of sulfur and phosphorus was used as pH adjuster, the dosage was 2.6kg / t, and stirred for 0.5min; the mixture of starch and sodium pyrophosphate was added to the pulp as an inhibitor, and the dosage was 0.9kg / t, and stirred for 1min; then added The mixed collector 0.31kg / t is subjected to reverse flotation roughing to obtain product A and foam product A in the tank. The mixed collectors used are dodecyl trimethyl ammonium bromide, A mixture of potassium dodecyl phosphate, dodecane and terpene alcohol in ...

Embodiment 3

[0065] For a siliceous calcium phosphate ore in Hubei, the raw ore P 2 O 5 Grade 26.78%, MgO content 2.27%, SiO 2 The content is 19.54%, which is processed according to the following process method:

[0066] 1) Crush the massive collophosphate ore to 1mm, and then grind the ore. The grinding fineness is -0.074mm, accounting for 89.2%. Add water to adjust the slurry concentration to 25%, and the temperature is about 20 °C; 8:2 sulfur-phosphorus mixed acid was used as pH adjuster, the dosage was 3.0kg / t, and stirred for 0.5min; the mixture of starch and sodium pyrophosphate was added to the pulp as an inhibitor, and the dosage was 0.65kg / t, and the stirring was for 1min; then added The mixed collector 0.30kg / t is subjected to reverse flotation and roughing to obtain product A and foam product A in the tank. A mixture of potassium tetradecyl phosphate, diesel oil and terpineol oil in a mass ratio of 35:15:13:23:14;

[0067] 2) Add 1.2kg / t of sulfur-phosphorus mixed acid with ...

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Abstract

The invention relates to a reverse flotation process for synchronously removing silicon and magnesium impurities from collophanite and a collecting agent thereof. The collecting agent comprises the following raw materials: an amine medicament, alpha sulfonated saturated fatty acid sodium, alkyl phosphate salt, non-polar oil and a foaming agent in a mass ratio of (30-42): (13-25): (5-13): (19-33): (10-21). The reverse flotation technology comprises the following steps that after raw collophanite is ground, water is added to obtain phosphoric ore pulp, a pH adjusting agent, an inhibitor and a collecting agent are sequentially added into the phosphoric ore pulp, reverse flotation roughing is conducted, the pH adjusting agent, the inhibitor and the collecting agent are sequentially added into a product in a tank, first reverse flotation concentration is conducted, the collecting agent is added into the product in the tank, and second reverse flotation concentration is conducted. And secondary reverse flotation concentration is conducted, and phosphate concentrate is obtained. According to the method, the phosphorite flotation technological process is simplified, and the purpose of synchronous reverse flotation by adding a reagent once in phosphorite beneficiation is achieved.

Description

technical field [0001] The invention belongs to the field of phosphate rock flotation, and in particular relates to a reverse flotation process for synchronously removing silicon and magnesium impurities from collophosphate rock and a collector thereof. Background technique [0002] Phosphate rock is an important industrial raw material, mainly used in the chemical industry and agriculture. Among them, agricultural applications account for a larger proportion, mainly for phosphate fertilizer production. With the development of agriculture, the country's demand for phosphate fertilizer is increasing day by day. There are less and less phosphate rock that can be better sorted. Therefore, the utilization of low-grade collophosphate rock in siliceous calcium is imminent. [0003] The silicon-magnesium impurity in the siliceous-calcareous medium and low grade collophosphate ore needs to be removed by beneficiation before it can be used for subsequent industrial applications. F...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B03D1/014B03D101/02B03D103/06
CPCB03D1/014B03D2201/02B03D2203/06
Inventor 李智力陈飞唐远何东升池汝安朱奥妮朱秀文陈琲琲杨丘
Owner WUHAN INSTITUTE OF TECHNOLOGY
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