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Method for simultaneously removing magnesium oxide, ferric oxide and aluminum oxide sesquioxide in middle-grade and low-grade phosphate ores by adopting double-reverse flotation process

A double reverse flotation and iron oxide technology, applied in flotation, solid separation, etc., can solve the problems of high beneficiation cost, high impurity content, large collector consumption, etc., and achieve the effect of reducing production cost and improving quality

Active Publication Date: 2013-11-06
KUNMING CHUAN JINNUO CHEM IND
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] Due to the gradual depletion of high-quality phosphate rock resources in my country, the medium and low-grade phosphate rock MgO, Fe 2 o 3 and Al 2 o 3 ) has high impurity content, which cannot meet the production requirements, and mineral processing is required
At present, the flotation of phosphate rock mostly adopts the method of reverse flotation to remove MgO, which cannot remove iron oxide and aluminum oxide; if the positive flotation process is used, the collector consumption is large, and it needs 2-4Kg / T , the cost of beneficiation is higher
And the patent of the industrialization device that adopts double reverse flotation process has not been reported

Method used

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  • Method for simultaneously removing magnesium oxide, ferric oxide and aluminum oxide sesquioxide in middle-grade and low-grade phosphate ores by adopting double-reverse flotation process

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0018] A method for simultaneously removing magnesium oxide, iron oxide and aluminum oxide sesquioxide from medium and low-grade phosphate rock by double reverse flotation process, see figure 1 , proceed as follows:

[0019] will contain P 2 o 5 The mass percentage is 23-25%, the MgO mass percentage is 3-4%, and the Fe 2 o 3 and Al 2 o 3 The mass percentage is 4-5% of the phosphate rock ground to -200 mesh 85-90%, and the slurry with a solid content of 20-25%;

[0020] Add 1# mixed inhibitor, stir well, and adjust the PH value of the pulp to 4.0-4.5; 1# mixed inhibitor is a mixed acid with a concentration of 5-15% fluosilicic acid and a concentration of 50% sulfuric acid in a mass ratio of 1:1;

[0021] The adjusted pulp is introduced into the flotation machine, and the collector CB-1 is added at the same time. CB-1 is a mixture of sodium oleate, sodium linoleate and sodium stearate in a mass ratio of 1:1:1. The dosage is 400g / T, after inflating and foaming, the demagne...

Embodiment 2

[0025] A method for simultaneously removing magnesium oxide, iron oxide and aluminum oxide sesquioxide from medium and low-grade phosphate rocks by double reverse flotation process, which is operated and processed according to the following steps:

[0026] will contain P 2 o 5 The mass percentage is 22-24%, the MgO mass percentage is 5-6%, and the Fe 2 o 3 and Al 2 o 3 The phosphate rock with a mass percentage of 3-5% is ground to -200 mesh 90-95%, and the slurry with a solid content of 30-35%.

[0027] Add 1# mixed inhibitor, stir well, adjust the PH value of the slurry to 4.5-5.0;

[0028] 1# mixed inhibitor is a mixed acid with a concentration of 5-15% fluosilicic acid and a concentration of 50% sulfuric acid (mass ratio is 1:1);

[0029] Introduce the adjusted pulp into the flotation machine, and add collector CB-1 at the same time, CB-1 is a mixture of sodium oleate, sodium linoleate, and sodium stearate (mass ratio 1:1:1), and its dosage It is 500g / T, and after in...

Embodiment 3

[0034] A method for simultaneously removing magnesium oxide, iron oxide and aluminum oxide sesquioxide from medium and low-grade phosphate rocks by double reverse flotation process, which is operated and processed according to the following steps:

[0035] will contain P 2 o 5 The mass percentage is 23-26%, the MgO mass percentage is 4-5%, and the Fe 2 o 3 and Al 2 o 3 The phosphate rock with a mass percentage of 5-6% is ground to -200 mesh 90-95%, and the pulp with a solid content of 25-30%.

[0036] Add 1# mixed inhibitor, stir well, and adjust the PH value of the pulp to 4.0-4.8; 1# mixed inhibitor is a mixed acid with a concentration of 5-15% fluosilicic acid and a concentration of 50% sulfuric acid in a mass ratio of 1:1;

[0037] The adjusted pulp is introduced into the flotation machine, and the collector CB-1 is added at the same time. CB-1 is a mixture of sodium oleate, sodium linoleate and sodium stearate in a mass ratio of 1:1:1. The dosage is 600g / T, after in...

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Abstract

The invention relates to a method for simultaneously removing magnesium oxide, ferric oxide and aluminum oxide sesquioxide in middle-grade and low-grade phosphate ores by adopting a double-reverse floatation process. The method adopts the double-reverse floatation process to remove MgO, Fe2O3 and Al2O3 so as to realize continuous production of an industrialization device. The method comprises the following process steps of: levigating raw phosphate ore, wherein more than or equal to 85 percent of raw phosphate ore is minus 200 messes in size, and the solid content of ore pulp is 20-45 percent; adding a No.1 mixed inhibitor in the ore pulp, introducing the regulated ore pulp into a floatation machine, adding a collecting agent CB-1, aerating, and collating, so as to obtain magnesium removal phosphate concentrate; adding a No.2 mixed inhibitor in the magnesium-removal phosphate concentrate, adding a collecting agent CB-2, aerating, and collating, so as to obtain crude phosphate concentrate without ferric oxide and aluminum oxide; and adding a collecting agent CB-3 into the crude phosphate concentrate without ferric oxide and aluminum oxide, aerating, and collating, so as to obtain high-grade phosphate concentrate. The method can simultaneously remove the content of magnesium oxide, ferric oxide and aluminum oxide from the concentrate, thus obviously improving the quality of the phosphate concentrate and lowering the production cost in follow-up acid making process.

Description

technical field [0001] The invention relates to a method for simultaneously removing MgO and Fe from middle and low-grade collophanite. 2 o 3 and Al 2 o 3 The technical field of the double reverse flotation process method. Background technique [0002] Due to the gradual depletion of high-quality phosphate rock resources in my country, the medium and low-grade phosphate rock MgO, Fe 2 o 3 and Al 2 o 3 ) has a high impurity content and cannot meet the production requirements, so mineral processing is required. At present, the flotation of phosphate rock mostly adopts the method of reverse flotation to remove MgO, which cannot remove iron oxide and aluminum oxide; if the positive flotation process is used, the collector consumption is large, and it needs 2-4Kg / T , The cost of beneficiation is higher. And adopt the patent of the industrialization device of double reverse flotation process to have no report. Contents of the invention [0003] Purpose of the present i...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B03D1/00B03D1/018B03D101/02B03D101/06
Inventor 曾润国魏家贵杨兴刘泽祥周永祥刘甍赵家荣
Owner KUNMING CHUAN JINNUO CHEM IND
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