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Mineral processing technology for comprehensively recycling iron phosphate from low-grade high phosphorus vanadium titanium magnetite

A vanadium-titanium magnetite, low-grade technology, applied in flotation, magnetic separation, solid separation, etc., can solve the problems of limited comprehensive recovery process application, poor solubility and dispersibility, increased production costs, etc., to reduce the cost of phosphorus selection , low cost and high efficiency, and the effect of improving benefits

Inactive Publication Date: 2012-10-17
NORTH CHINA UNIVERSITY OF SCIENCE AND TECHNOLOGY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Due to the poor solubility and dispersibility of such collectors at room temperature, heating (~38°C) flotation processes are often used, which increases production costs and limits the application of comprehensive recovery processes

Method used

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  • Mineral processing technology for comprehensively recycling iron phosphate from low-grade high phosphorus vanadium titanium magnetite
  • Mineral processing technology for comprehensively recycling iron phosphate from low-grade high phosphorus vanadium titanium magnetite
  • Mineral processing technology for comprehensively recycling iron phosphate from low-grade high phosphorus vanadium titanium magnetite

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0018] Embodiment 1: This ore dressing process for comprehensive recovery of iron and phosphorus from low-grade high-phosphorus vanadium-titanium magnetite adopts the following process steps.

[0019] Raw materials: select vanadium-titanium magnetite from a certain place in Chengde area. The useful minerals of this raw material are mainly magnetite, and a small amount of hematite and limonite; the non-metallic minerals are mainly plagioclase, pyroxene, hornblende and apatite. Total iron grade TFe is 9.00wt%, containing phosphorus P 2 o 5 1.73wt%, titanium content TiO 2 1.62wt%, which is low-grade high-phosphorus vanadium-titanium magnetite.

[0020] Process steps: such as figure 1 As shown, the raw ore is ground and classified in the first stage, and the grinding fineness is -200 mesh, accounting for 50%. After two magnetic separations ( figure 1 After the first magnetism and the second magnetism), the second magnetite concentrate will be graded by the second stage of gri...

Embodiment 2

[0021] Embodiment 2: This ore dressing process for comprehensive recovery of iron and phosphorus from low-grade high-phosphorus vanadium-titanium magnetite adopts the following process steps.

[0022] Raw materials: select vanadium-titanium magnetite from a certain place in Zhangjiakou area. The useful minerals in the ore are mainly magnetite and a small amount of hematite and limonite; there is also a certain amount of metal sulfide, mainly pyrite and pyrrhotite mine. The multi-element analysis of the ore is shown in Table 1. The total iron grade TFe is 15.88%, and the phosphorus content is P 2 o 5 2.53%, titanium content TiO 2 2.62%, which is low-grade high-phosphorus vanadium-titanium magnetite.

[0023] Table 1: Results of multi-element analysis of raw ore

[0024]

[0025] Process step is basically the same as embodiment 1. Among them, the grinding fineness of the first stage is -200 mesh, accounting for 50%. After two magnetic separations, the concentrate is then...

Embodiment 3

[0026] Embodiment 3: This ore dressing process for comprehensive recovery of iron and phosphorus from low-grade high-phosphorus vanadium-titanium magnetite adopts the following process steps.

[0027] Raw materials: select vanadium-titanium magnetite from a certain place in Chengde area. The useful minerals in this ore are mainly magnetite, and there are also a small amount of hematite and limonite; the total iron grade TFe is 12.17%, and the phosphorus content is P 2 o 5 is 2.93%; vanadium and titanium content are V 2 o 5 0.053%, TiO 2 2.31%, which is low-grade high-phosphorus vanadium-titanium magnetite. The multi-element analysis of the raw ore is shown in Table 2.

[0028] Table 2: Results of multi-element analysis of raw ore

[0029]

[0030] Process step is basically the same as embodiment 1. Among them, the grinding fineness of the first stage is -200 mesh, accounting for 45%. After two magnetic separations, the concentrate is then subjected to the second sta...

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Abstract

The invention discloses a mineral processing technology for comprehensively recycling iron phosphorus from low-grade high phosphorus vanadium titanium magnetite. The low-grade high phosphorus vanadium titanium magnetite is subjected to stage grinding and low intensity magnetic separation processes to obtain iron ore concentrate and magnetic separation tailings; the magnetic separation tailings uses low temperature flotation to recycle phosphorus after concentration, wherein the low temperature flotation is as follow: adding a slurry pH adjusting agent, an inhibitor and a collecting agent to the slurry of magnetic separation tailings, adjusting the pH of the slurry to 9-10, and performing flotation under 15-20 DEG C. The technology provided by the invention puts forward a mineral processing technology for comprehensively recycling iron phosphorus aiming at the low-grade high phosphorus vanadium titanium magnetite, which firstly adopts the low intensity magnetic separation method to recycle iron from ores and then adopts the low temperature flotation method to recycle phosphorus from tailings, thus realizing efficient utilization of such kind of mineral resources and increasing the economic benefits of concentrators. The low temperature flotation of the technology can reduce the subsequent costs of processing phosphate ores, improve the benefit of the comprehensive utilization of resources, reduce the production cost and achieve low cost and efficient recycling of phosphorus.

Description

technical field [0001] The invention relates to a beneficiation process, in particular to a beneficiation process for comprehensively recovering iron and phosphorus from low-grade high-phosphorus vanadium-titanium magnetite. Background technique [0002] In recent years, the rapid development of my country's iron and steel industry and the continuous increase in steel output have led to a serious shortage of supply in the domestic iron ore market, and a sharp increase in iron ore imports. In order to ensure the healthy and sustainable development of my country's iron and steel industry, there is an urgent need for a stable, sufficient and high-quality supply of iron ore raw materials. Vanadium-titanium magnetite is the main source of vanadium and titanium products in my country. It has specific use value for iron and steel smelting and is an indispensable main raw material for the iron and steel industry. my country's vanadium-titanium magnetite resources are rich in reserv...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B03D1/00B03B1/00B03C1/00
Inventor 王伟之李德兴张春舫王晓旭赵淑芳李凤久
Owner NORTH CHINA UNIVERSITY OF SCIENCE AND TECHNOLOGY
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