Synchronous reverse flotation process for low-magnesium high-magnification semi-collophanite

A technology of reverse flotation and colloidal phosphate rock, applied in flotation, solid separation and other directions, can solve the problems of complex beneficiation process, complex symbiotic relationship, low sorting efficiency, etc., to overcome the complex flotation process and simple flotation process. , the effect of strong operability

Active Publication Date: 2020-09-04
YIDU XINGFA CHEM COMPANY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Due to the complex symbiotic relationship between minerals and gangues, collophosite requires complex beneficiation processes, large amounts of chemicals, and low separation efficiency. Therefore, it is necessary to develop a streamlined process for economical recovery of phosphorus minerals

Method used

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  • Synchronous reverse flotation process for low-magnesium high-magnification semi-collophanite

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] In this example, P 2 o 5 The grade is 26.46%, sesquioxide Al 2 o 3 Content 3.67%, Fe 2 o 3 Content 1.21%, MgO content 1.56%, SiO 2 15.3wt%, CaO 37.37wt% low-magnesium colloidal phosphate rock was subjected to synchronous reverse flotation dealumination and magnesium flotation, the process flow see figure 1 , the specific process steps are as follows:

[0026](1) Add water to crush and grind the low-magnesium and high-sesquitylic phosphate rock (the content of -0.074mm is 70%) to obtain a pulp with a mass concentration of 26%. Add a pH regulator phosphoric acid to the pulp to adjust the pulp and stir to adjust the pH to 5.8 , and then add regulator TCM (aluminum chloride, sodium chloride and polyacrylamide with a mass ratio of 1:1:0.0003) to adjust the pulp flotation system, and finally add anion collectors and cationic collectors to stir evenly, and inflate the flotation The resulting foam product is tailings, and the product in the flotation tank is reverse flo...

Embodiment 2

[0029] In this example, P 2 o 5 The grade is 26.47%, sesquioxide Al 2 o 3 Content 3.47%, Fe 2 o 3 Content 1.23%, MgO content 1.86%, SiO 2 16.4wt%, CaO 36.74wt% low-magnesium colloidal phosphate rock was subjected to synchronous reverse flotation dealumination and magnesium flotation, the process flow see figure 1 , the specific process steps are as follows:

[0030] (1) Add water to crush and grind the low-magnesium and high-sesquivalent colloidal phosphate rock (-0.074mm70%) to obtain a pulp with a mass concentration of 26%, add a pH regulator phosphoric acid to the pulp to adjust the pulp and stir, adjust the pH to 5.8, and then add Regulator TCM (aluminum chloride, sodium chloride and polyacrylamide with a mass ratio of 1:1:0.0005) adjusts the pulp flotation system, and finally add anion collectors and cationic collectors to stir evenly, aerate flotation, and the obtained The foam product is tailings, and the product in the flotation tank is reverse flotation dealum...

Embodiment 3

[0033] In this example, P 2 o 5 The grade is 26.67%, sesquioxide Al 2 o 3 Content 3.47%, Fe 2 o 3 Content 1.04%, MgO content 2.36%, SiO 2 14.45 wt%, CaO 37.85 wt% low-magnesium colloidal phosphate rock was subjected to synchronous reverse flotation dealumination and magnesium flotation. figure 1 , the specific process steps are as follows:

[0034] (1) Add water to crush and grind the low-magnesium and high-sesquivalent colloidal phosphate rock (-0.074mm70%) to obtain a pulp with a mass concentration of 26%, add a pH regulator phosphoric acid to the pulp to adjust the pulp and stir, adjust the pH to 5.8, and then add Regulator TCM (aluminum chloride, sodium chloride and polyacrylamide with a mass ratio of 0.6:1:0.0004) to adjust the slurry flotation system, and finally add anion collectors and cationic collectors to stir evenly, aerated flotation, and the obtained The foam product is tailings, and the product in the flotation tank is reverse flotation dealumination and...

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Abstract

The invention belongs to the technical field of phosphate ore beneficiation, and particularly relates to a synchronous reverse flotation process for low-magnesium high-magnification semi-collophanite.According to the technical scheme, a 'one-step method' flotation process is adopted, namely, water is added for size mixing, an ore pulp flotation system is adjusted through an adjusting agent underthe condition that the pH ranges from 4 to 6, and then an anion collecting agent and a cation collecting agent are added for desilicication and magnesium removal synchronous reverse flotation. The process has the advantages that useful minerals in the ore are effectively enriched through reasonable utilization of a combined reagent based on the fact that the proportions of gangue minerals in collophanite are different, the phosphate ore flotation technological process is simplified, the cost of the flotation reagent is remarkably reduced, the capacity of recovering useful minerals from phosphate ore is effectively improved, and a new thought is provided for the flotation technology of the low-magnesium high-power semi-collophanite.

Description

technical field [0001] The invention belongs to the technical field of phosphate ore beneficiation flotation technology, and in particular relates to a synchronous reverse flotation process of low magnesium and high colloidal phosphate rock. Background technique [0002] my country is rich in phosphate rock resources, with resource reserves reaching 16.7 billion tons. Among them, sedimentary phosphate rock, also known as collophosite, accounts for more than 80% of the total phosphate rock in my country, and most of them are low- and medium-grade ores. Collophosite is an oxide ore, and due to the extremely complex physical and chemical conditions of the oxidation zone, the mineral composition and structure of the oxide ore are also very complex. The choice of phosphate rock depends on the type of phosphate rock, gangue composition, mineral and gangue symbiotic relationship and other factors. Collophosite in my country generally has the characteristics of low grade, high cont...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B03D1/018B03D101/00B03D101/02B03D103/06
CPCB03D1/018B03D2201/007B03D2201/02B03D2203/06
Inventor 陈慧郑光明刘鑫阮耀阳邹学勇沈维云李防刘连坤王旭东
Owner YIDU XINGFA CHEM COMPANY
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