Unlock instant, AI-driven research and patent intelligence for your innovation.

Direct reduction multi-gradient extraction process of vanadium-titanium magnetite concentrate

A vanadium-titanium magnetite concentrate and extraction process technology, which is applied in the fields of magnetic separation, chemical instruments and methods, solid separation, etc., can solve the problems of waste of titanium resources, waste of titanium resources, ecological environment pollution, etc. The effect of convenience and avoiding environmental pollution

Inactive Publication Date: 2016-04-20
CHONGQING UNIV
View PDF2 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The continuous accumulation of tailings not only pollutes the ecological environment, but also wastes titanium resources
At present, the utilization of high-titanium blast furnace slag is insufficient. Except for a small amount of building materials, most of it is still piled up in the slag yard.
Titanium, as a resource with great economic and strategic value, will inevitably cause a serious waste of titanium resources if it is used in large quantities as building materials or piled up in slag yards.

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Direct reduction multi-gradient extraction process of vanadium-titanium magnetite concentrate
  • Direct reduction multi-gradient extraction process of vanadium-titanium magnetite concentrate
  • Direct reduction multi-gradient extraction process of vanadium-titanium magnetite concentrate

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030] Embodiment 1: see figure 1 , vanadium-titanium magnetite concentrate direct reduction multi-gradient extraction process, including the following steps:

[0031] 1) Pressure ball: select iron ore powder and coal powder, and grind the iron ore powder and coal powder. The mass of pulverized coal with a particle size of less than 200 mesh accounts for more than 90% of the total mass of pulverized coal; mix the powdered iron ore and pulverized coal according to the ratio of C / O=1, and then add bentonite as a binder. The amount accounts for 3% of the total mass of iron ore powder and coal powder. Finally, the iron ore powder, coal powder and bentonite are pressed into balls with a diameter of 30mm. , to remove the moisture and binder in the ball;

[0032] 2) Vacuum reduction; first fill the high temperature resistance furnace with argon gas to discharge the air in the high temperature resistance furnace, then raise the temperature of the high temperature resistance furnace ...

Embodiment

[0043] Embodiment: the extraction process of embodiment 5 is identical with embodiment 1, and difference only is that the selection of each parameter in three steps is different, and the result analysis after embodiment 5 magnetic separation is specifically as follows:

[0044] Table 5 is the result analysis after the magnetic separation of embodiment 5:

[0045] table 5

[0046]

[0047] The extraction process of Examples 6-8 is the same as that of Example 5, the difference is only in the selection of iron ore powder and coal powder carbon content in step 1) (iron ore powder, coal powder according to the mixing ratio of C / O) , the result analysis after embodiment 6~8 magnetic separation is specifically as table 6:

[0048] Table 6

[0049]

Embodiment 9

[0050] The extraction process of embodiment 9 is the same as that of embodiment 1, and the difference is that the selection of each parameter in the three steps is different. The result analysis after magnetic separation of embodiment 9 is specifically as follows:

[0051] Table 7 is the result analysis after the magnetic separation of embodiment 9:

[0052] Table 7

[0053]

[0054] The extraction process of Examples 10-12 is the same as that of Example 9, the only difference is that in step 1), the choice of carbon content of iron ore powder and coal powder is selected (the mixing ratio of iron ore powder and coal powder according to C / O) , the result analysis after embodiment 10~12 magnetic separation is specifically as table 8:

[0055] Table 8

[0056]

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

The invention relates to a direct-reduction multi-gradient extraction technology for vanadium-titanium magnetite concentrate. The direct-reduction multi-gradient extraction technology comprises the following steps: 1) ball pressing, to be specific, selecting and grinding iron mine powder and coal powder, uniformly mixing the iron mine powder with the coal powder according to the fact that the ratio of C to O is 1-1.3, adding bentonite to be used as a binding agent, finally, pressing the iron mine powder, the coal powder and the bentonite into balls, and drying the balls in a constant-temperature drying oven; 2) vacuum reduction, to be specific, reducing the balls in a high-temperature resistance furnace under protection of argon, and conducting air cooling; 3) magnetic separation, to be specific, after mechanical disruption, firstly, screening out the particles of not smaller than 23-28 meshes, and performing magnetic separation on the particles of smaller than 23-28 meshes according to the magnetic field intensity of 19 GS, 31 GS and 62 GS. The direct-reduction multi-gradient extraction technology disclosed by the invention can realize separation of titanium and iron under a solid state condition, is short in process and low in energy consumption, and provides technical raw materials for effectively utilizing iron and titanium.

Description

technical field [0001] The invention relates to the field of beneficiation of vanadium-titanium magnetite concentrate, in particular to a direct reduction multi-gradient extraction process of vanadium-titanium magnetite concentrate. Background technique [0002] Vanadium-titanium magnetite is a composite ore with symbiotic iron, vanadium, titanium and other valuable elements. It is mainly distributed in Panxi, Chengde and Ma'anshan areas of my country, and the reserves in Panxi area are more than 10 billion tons. It is the largest vanadium-titanium magnetite deposit in my country and has high comprehensive utilization value. [0003] The titanium minerals in Panzhihua vanadium-titanium magnetite ore are mainly granular ilmenite, ilmenite spar and a small amount of flaky ilmenite. At the current technical level, granular ilmenite can be recovered separately, while ilmenite spar and flake ilmenite cannot be recovered separately. The original ore has a dense structure and high...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Patents(China)
IPC IPC(8): C21B13/00C22B5/10B03C1/00
Inventor 吕学伟陈龙邱贵宝李宝华单成白晨光
Owner CHONGQING UNIV