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Calcium carbide slag powder and application thereof

A technology of calcium carbide slag powder and calcium carbide, which is applied in the field of solidified materials, can solve the problems of difficult promotion and high cost, and achieve the effects of accelerating reaction speed, reducing production power consumption, and reducing reaction heat loss

Inactive Publication Date: 2007-09-19
李建华
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This method belongs to the high-temperature modification of carbide slag, which is expensive and difficult to popularize.

Method used

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  • Calcium carbide slag powder and application thereof
  • Calcium carbide slag powder and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0032] Embodiment 1: Carbide slag powder solidification material is that the following raw materials are mixed in proportion and obtained by granulation, all in parts by weight:

[0033] Calcium carbide slag powder, containing 72% CaO and 20% C, 100 parts

[0034] Dry powder industrial adhesive 15 parts

[0035] The above-mentioned dry powder industrial binder is a combination of lime and starch in a weight ratio of 2:1.

[0036] During the granulation process of slag powder solidified material, it is absolutely forbidden to add aqueous solution. Carbide slag powder is mixed with dry powder industrial additives, sent to the feed port of dry powder granulator by conveyor, and granulated after extrusion.

Embodiment 2

[0037] Embodiment 2: Carbide slag powder solidification material is that following raw materials are mixed in proportion, and granulation obtains, and all are parts by weight:

[0038] Calcium carbide slag powder, containing 60% CaO and 15% C, 100 parts

[0039] Dry powder industrial adhesive 10 parts

[0040] The above-mentioned dry powder industrial binder is a combination of lime and starch in a weight ratio of 2:1.

Embodiment 3

[0041] Embodiment 3: dry material solidification granulator, the structure is shown in Figure 1 and Figure 2.

[0042] Including motor 14, gearbox 13, two extrusion rollers 3, 11, screw device 7, motor 14 and gearbox 13 drive two oppositely rotating extrusion rollers 3, 11. In order to increase the strength of extrusion, a downward-rotating screw device 7 is installed in the middle of the feeding hopper 6 above the two extrusion rollers. The screw device is driven by the direct-coupled motor reducer 1 to push the powder into the Between the two extrusion rollers 3, 11, the extruded pellets have more strength and hardness, which can meet the requirements of extruding the pellets into granules without adding water. Described extruding roll is the round roll that has pit 17 on the surface. A feed opening 15 is provided on the upper side of the feed hopper 6 . The two linkage gears 8 and 9 are mounted on two bearings 5 ​​and 12 respectively, the linkage gear 8 that is connected ...

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Abstract

The present invention discloses a carbide slag powder curing material and the application of the same, which belongs to the waste slag utilizing technology of calcium carbide production. The carbide slag powder curing material is produced by proportioning mixing pelletization of carbide slag powder and dry powder industry adhesive. The carbide slag powder curing material can be used for producing qualified calcium carbide and cement by proportioning mixing with the charging for producing calcium carbide and the clinker for producing cement. The present invention also provides a dry material curing pelleter for producing carbide slag powder curing material, which comprises a motor, a gear-box, two extruding rollers and a screw device. In the present invention, the carbide slag is recovered so as to solve the problem of that the generated abundant dust and slag pollute environment and harm people health.

Description

technical field [0001] The invention relates to a solidified material prepared by using calcium carbide slag powder and its application, and belongs to the technical field of utilization of calcium carbide production waste slag. Background technique [0002] Calcium carbide is an important chemical raw material, its main component is CaC 2 , is a high-temperature reaction product of raw materials with CaO and C as the main components. The smelting of calcium carbide is completed under the high temperature formed by the conversion of electric energy in the calcium carbide smelting furnace. The smelting process of calcium carbide is also a process of generating a large amount of slag. For every ton of calcium carbide produced, 100-150Kg of slag dust can be produced. The characteristics of this calcium carbide slag dust are: large amount of generation, fine particle size, low density, high content of useful components (containing more than 70% of calcium and carbon, etc.), I...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C01B31/32C04B7/00C04B11/00C04B12/00B01J2/22B01J2/28C01B32/942
CPCC04B7/17Y02P40/10C04B7/40
Inventor 李建华韩家忠王立华
Owner 李建华
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