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A kind of vanadium-titanium magnetite smelting slag activation method

A technology of vanadium titanomagnetite and activation method, applied in cement production and other directions, can solve problems such as poor fluidity and thickening of titanium slag, and achieve the effects of low power consumption, increased specific surface area, and high dispersibility

Active Publication Date: 2021-09-24
LIUPANSHUI NORMAL UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The main reason is that Ti(CNO) can thicken the titanium slag and make the fluidity worse

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0033] Mechanical activation under embodiment 1 inert ball milling atmosphere

[0034] Pulverize 10 grams of vanadium-titanium magnetite smelting slag to obtain vanadium-titanium magnetite smelting slag powder, and dry it at a constant temperature of 750°C to remove all absorbed moisture in the material. After drying, the vanadium-titanium magnetite smelting slag is Add 0.01 gram of synergist (in this example, the synergist is a mixture of sodium silicate and calcium carbonate, and the mixing mass ratio of the two is 3:1), mix well and put it in a microwave reactor. The microwave treatment was carried out for 30 minutes at the highest power; the vanadium-titanium magnetite smelting slag powder after the microwave treatment was packed into a container containing 6 stainless steel balls with a diameter of 18 mm and 12 stainless steel balls with a diameter of 12 mm (the grinding aid is ethanol, and the mass ratio of the ball to material is 25:1), first vacuumize the ball mill tan...

Embodiment 2

[0037] With embodiment 1, the only difference is that the ball milling time is 60min.

[0038] The activated vanadium-titanium magnetite smelting slag micropowder prepared in this example is radioactively qualified according to the GB-6566 national standard, the specific surface area is 550㎡ / kg, and the activity index reaches GB / T18046-2008; GB / T203-1994 requirements, pure activation The final vanadium-titanium-magnetite smelting slag fine powder has a 3d compressive strength of 30Mpa and a 28d compressive strength of 50Mpa; using this quality of vanadium-titanium magnetite smelting slag fine powder to replace 25% of PS-32.5 cement, the 3d compressive strength 40Mpa, 28d compressive strength is 60Mpa.

Embodiment 3

[0040] With embodiment 1, the only difference is that the ball milling time is 120min.

[0041] The activated vanadium-titanium magnetite smelting slag micropowder prepared in this example is radioactively qualified according to GB-6566 national standard, the specific surface area is 650㎡ / kg, and the activity index reaches GB / T18046-2008; GB / T203-1994 requirements, pure activation The final vanadium-titanium-magnetite smelting slag fine powder has a 3d compressive strength of 33Mpa and a 28d compressive strength of 51Mpa; using this quality of vanadium-titanium magnetite smelting slag fine powder to replace 25% of PS-32.5 cement, the 3d compressive strength It is 45Mpa, and the 28d compressive strength is 68Mpa.

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Abstract

The invention discloses a method for activating vanadium-titanium magnetite smelting slag, which belongs to the technical field of smelting slag activation. The vanadium-titanium magnetite smelting slag is pulverized to obtain vanadium-titanium magnetite smelting slag powder, which is dried under constant temperature conditions. Remove all the adsorbed moisture in the material, mix it with the synergist evenly, put it in the microwave reactor, and carry out microwave treatment; add it into the planetary ball mill together with the grinding aid, and carry out the process under the protection of inert gas or 10% air or air atmosphere Ball milling is enough. The invention greatly stimulates the hydration activity on the surface of the powder, and the specific surface area is greatly increased. The powder after microwave treatment is further ball-milled under the action of liquid grinding aids, which can effectively reduce the hydration activity on the surface of the powder with high specific area. Static electricity prevents powder aggregation, thus obtaining highly active and highly dispersed vanadium-titanium magnetite smelting slag micropowder under low power consumption, and realizing high-quality treatment of vanadium-titanium magnetite smelting slag.

Description

technical field [0001] The invention relates to the technical field of smelting slag activation, in particular to a method for activating vanadium-titanium magnetite smelting slag. Background technique [0002] my country's vanadium-titanium magnetite smelting history has been 40 to 50 years. In the long years, the solid industrial waste generated after smelting has reached about 100 million tons, and the annual rate is 5 million tons. The increase, piled up with large and small ravines in the production area, not only wasted precious land resources but also polluted the environment, urgently awaiting our comprehensive development and utilization. [0003] my country's scientific and technological workers have never stopped research on the comprehensive utilization of titanium slag. Due to the special physical and chemical properties and mineral structure of titanium slag, no major breakthrough has been made. Chenggang has cooperated with many research and production units ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C04B7/153C04B7/36
CPCY02P40/10
Inventor 朱山马毅胡江良袁杰
Owner LIUPANSHUI NORMAL UNIV
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