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Novel high-strength easily-molded stemming

A high-strength, blasting clay technology, which is applied in the field of refractory materials and new high-strength and easy-to-plastic clay, can solve the negative impact on the performance of the clay, which is not conducive to the production of high-quality clay, prolong the production cycle, and reduce production costs. and other problems, to achieve high refractoriness, good workability, and small caliber corrosion

Inactive Publication Date: 2017-01-25
CHANGXING MINGTIAN FURNACE CHARGE
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This method not only prolongs the production cycle and production cost, but also the amount of binder and dry powder has a negative impact on the performance of the clay, which is not conducive to the production of high-quality clay

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0020] A new type of high-strength and easy-to-plastic gun clay of the present invention comprises the following components and the mass ratio of each component is: recycled gun mud: 22 parts; brown corundum: 15 parts; bauxite: 7 parts; clay: 6 parts; SiC-C composite material: 5 parts; silicon carbide powder: 3 parts; sericite: 5 parts; clay: 6 parts; high alumina aggregate: 4 parts; asphalt: 4 parts.

Embodiment 2

[0022] A new type of high-strength and easy-to-plastic gun clay of the present invention comprises the following components and the mass ratio of each component is: recycled gun mud: 24 parts; brown corundum: 17 parts; bauxite: 8 parts; clay: 7 parts; SiC-C composite material: 6 parts; silicon carbide powder: 4 parts; sericite: 5.5 parts; clay: 7 parts; high alumina aggregate: 4.5 parts; asphalt: 6 parts.

Embodiment 3

[0024] A new type of high-strength and easy-to-plastic gun clay of the present invention comprises the following components and the mass ratio of each component is: recycled gun mud: 26 parts; brown corundum: 20 parts; bauxite: 10 parts; clay:: 8 parts; SiC-C composite material: 7 parts; silicon carbide powder: 5 parts; sericite: 6 parts; clay: 8 parts; high alumina aggregate: 5 parts; asphalt: 7 parts.

[0025] The invention is a new type of high-strength and easy-to-plastic clay, technical performance indicators:

[0026] 1. Main chemical composition (%): Al2O3≥50

[0027] SiC+C≥30

[0028] 2. Bulk density (g / cm3): ≥2.00 after 1350℃×3h buried carbon burning

[0029] 3. Normal temperature compressive strength (Mpa): ≥25 after 1350℃×3h buried carbon burning

[0030] 4. Heating permanent line change (%): 1350℃×3h after buried carbon burning -0.6~+0.8

[0031] 5. Blast furnace type: 2500m 3 above

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Abstract

The invention discloses novel high-strength easily-molded stemming which comprises the following components in parts by mass: 22 to 26 parts of recycled stemming, 15 to 20 parts of brown aluminium oxide, 7 to 10 parts of alumina, 6 to 8 parts of clay, 5 to 7 parts of SiC-C composite materials, 3 to 5 parts of silicon carbide micropowder, 5 to 6 parts of sericite, 2 to 3 parts of coke powder, 3 to 6 parts of an environmentally-friendly binding agent, 6 to 8 parts of clay, 4 to 5 parts of high-aluminum aggregate and 4 to 7 parts of asphalt. Compared with the prior art, the novel high-strength easily-molded stemming has high plasticity, high filling ability, high sinterability and high iron slag resistance, avoids environmental pollution in the production and use processes and realizes environmental protection.

Description

[0001] 【Technical field】 [0002] The invention relates to the technical field of refractory materials, in particular to the technical field of a novel high-strength and easy-to-mold gun clay. [0003] 【Background technique】 [0004] Clay is an unshaped refractory material used to seal the iron hole of the blast furnace. The plasticity of the gun mud has an important influence on the opening and plugging operation of the iron hole, and its value is required to be within a certain range. The plasticity of industrially produced clay is unstable, and the plasticity of different batches of clay is quite different. The current solution is to add binders and dry powder to adjust, and discharge the clay after the plasticity of the clay is within a certain range. This method not only prolongs the production cycle and production cost, but also the amount of binder and dry powder has a negative impact on the performance of the clay, which is not conducive to the production of high-quali...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B35/66C04B33/132C04B33/13
CPCC04B33/13C04B33/1305C04B33/131C04B33/1324C04B35/66C04B2235/3217C04B2235/3472C04B2235/349C04B2235/3826C04B2235/422C04B2235/48C04B2235/77C04B2235/96C04B2235/9676Y02P40/60
Inventor 佘亚锋金金佘凤娅佘成明王娇章亚
Owner CHANGXING MINGTIAN FURNACE CHARGE
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