Collophanite obverse-reverse flotation collecting agent and preparation method thereof

A technology of reverse flotation and colloidal phosphate rock, applied in flotation, solid separation and other directions, can solve the problems of poor selectivity, low recovery rate of concentrate, high MgO content in concentrate, and achieve low beneficiation cost and high recovery rate of concentrate , The effect of low MgO content in concentrate

Active Publication Date: 2013-04-24
HUBEI FORBON NEW MATERIAL CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, most of the collophosite direct-reverse flotation collectors used in industry require the temperature of the flotation pulp to be above 35°C, and the selectivity is poor. The resulting concentrate has a high MgO content and a low concentrate recovery rate.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0010] Embodiment 1: Get the saturated higher fatty acid of the C12 of 100kg and the unsaturated higher fatty acid of the C18 of 900kg, saponify 6h with the KOH of 250kg after mixing to obtain the higher fatty acid potassium soap with fatty acid content higher than 40%. Get this higher fatty acid potassium soap 90kg, lauryl phosphate 10kg, after mixing, obtain basic substance; Add water 2000kg and stir to obtain collector.

[0011] Using this collector at a flotation temperature of 20°C 2 o 5 15.3%, MgO 5.2% raw ore was processed to get P 2 o 5 30.6%, MgO 1.5% concentrate, recovery rate 83.7%.

Embodiment 2

[0012] Embodiment 2: get the saturated higher fatty acid of the C14 of 130kg and the unsaturated higher fatty acid of the C18 of 870kg, after mixing, obtain the higher fatty acid potassium soap with fatty acid content higher than 40% with 250KOH saponification 6h; Get this higher fatty acid potassium soap 92kg, ten 8kg of dialkyl phosphates were mixed to obtain the basic substance; 5000kg of water was added and stirred to obtain the collector.

[0013] Using this collector at a flotation temperature of 20°C 2 o 5 15.3%, MgO 5.2% raw ore was processed to get P 2 o 5 30.4%, MgO 1.6% concentrate, recovery 82.9%.

Embodiment 3

[0014] Embodiment 3: get the saturated higher fatty acid of the C16 of 160kg and the unsaturated higher fatty acid of the C18 of 840kg, after mixing, obtain the higher fatty acid potassium soap with fatty acid content higher than 40% with 250kgKOH saponification 6h; Get this higher fatty acid potassium soap 94kg, ten 6kg of dialkyl phosphates were mixed to obtain basic substances; 8000kg of water was added and stirred to obtain collectors.

[0015] Using this collector at a flotation temperature of 20°C 2 o 5 15.3%, MgO 5.2% raw ore was processed to get P 2 o 5 30.8%, MgO 1.4% concentrate, recovery 82.5%.

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Abstract

The invention relates to a collophanite obverse-reverse flotation collecting agent and a preparation method thereof. The collophanite obverse-reverse flotation collecting agent provided by the invention is prepared by mixing basic substances with water; the mass ratio of the basic substances to the water is 1:(20-100), wherein the basic substances comprise the following components in percentage by weight: 90-95% of higher fatty acid soap and 5-10% of dodecyl phosphate ester; and the content of fatty acid in the higher fatty acid soap is not less than 40%. The collophanite obverse-reverse flotation collecting agent provided by the invention has the characteristics of low selected raw ore grade, wide application range and high concentrate recycling rate. Compared with the prior art, the collophanite obverse-reverse flotation collecting agent provided by the invention has the advantages of good selectivity, low cost and suitability for low-grade collophanite flotation at normal temperature.

Description

technical field [0001] The invention relates to a glenite forward-reverse flotation collector and a preparation method thereof. Background technique [0002] Phosphate rock is an important strategic resource, mainly used in the preparation of phosphate and phosphate fertilizer. The production of phosphate and phosphate fertilizer requires the raw material of phosphate rock to be P 2 o 5 The higher the content, the lower the MgO content, the better. General high-quality phosphate rock P 2 o 5 The content is above 30%, and the MgO content is below 2%. In nature, there are limited phosphate rocks that can reach such an index, and most low-grade phosphate rocks need to be processed to meet the requirements of high-quality phosphate rocks. Collophanite is one of the most difficult to select among all phosphate rocks, among which the middle and low grade collophanite is the most difficult to select. This type of ore is generally processed by forward and reverse flotation pr...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B03D1/016B03D101/02
Inventor 王仁宗熊良峰
Owner HUBEI FORBON NEW MATERIAL CO LTD
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