Low-cement refractory castable for pumping construction

A technology of refractory castables and refractory aggregates, which is applied in the field of building materials, can solve problems such as inability to pump construction, low fluidity, etc., save time and manpower, have superior fire resistance and wear resistance, and reduce workload Effect

Inactive Publication Date: 2021-07-23
HENAN YU & NEW ENERGY SAVING BUILDING MATERIALSCO
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The invention provides a low-cement refractory castable for pumping construction to solve the problem that the current low-cement refractory castable cannot be pumped for construction due to its low fluidity

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0031] A low-cement refractory castable for pumping construction, the refractory castable includes dry material and additives, wherein the dry material includes the following components in parts by weight: 55 parts of refractory aggregate, 27 parts of refractory powder , 10 parts of superfine powder, 8 parts of aluminate cement with alumina content of 50%, the particle size range of refractory aggregate is 0.088-15mm, the material of refractory aggregate includes corundum and silicon carbide, and its weight ratio is: 1: 1; The refractory powder is further ground refractory aggregate, and the particle size of the refractory powder is d 1 , d 1 2 , d 2 ≤45μm. The admixture includes fibers accounting for 0.01-3% of the weight of the dry material and composite additives accounting for 0.1-0.5% of the weight of the dry material. The fibers specifically include polypropylene explosion-proof fibers, heat-resistant stainless steel fibers, and aluminum silicate fibers. The weight rat...

Embodiment 2

[0034] A low-cement refractory castable for pumping construction, the refractory castable includes dry material and additives, wherein the dry material includes the following components in parts by weight: 55 parts of refractory aggregate, 20 parts of refractory powder , 10 parts of superfine powder, 9 parts of aluminate cement with 50% alumina content, 6 parts of expansion agent, the particle size range of refractory aggregate is 0.088-15mm, and the material of refractory aggregate is corundum and silicon carbide. The mass ratio of the refractory powder is 1:1; the refractory powder is further ground refractory aggregate, and the particle size of the refractory powder is d 1 , d 1 2 , d 2 ≤45μm. Swelling agents include quartz-like substances. The admixture includes 0.1% of the dry weight of fiber and 0.3% of the dry weight of the composite additive, the fiber specifically includes polypropylene explosion-proof fiber, pulp waste liquid, the mass ratio of the two is 3:1, and...

Embodiment 3

[0036] A low-cement refractory castable for pumping construction, the refractory castable includes dry material and additives, wherein the dry material includes the following components in parts by weight: 68 parts of refractory aggregate, 12 parts of refractory powder , 8 parts of superfine powder, 8 parts of aluminate cement with 80% alumina content, 4 parts of expansion agent, the particle size range of refractory aggregate is 0.088-15mm, the material of refractory aggregate includes corundum; refractory powder is carbonized Among silicon, bauxite and quartz stone, the weight ratio is 2:1:1, and the particle size of the refractory powder is d 1 , d 1 2 , d 2 ≤45μm. The expansion agent includes kyanite-like substances and in-situ synthetic mullite, the mass ratio of which is 2:1. The admixture includes 0.01% of the dry weight of fiber and 0.5% of the dry weight of the composite additive, the fiber specifically includes pulp waste liquid, heat-resistant stainless steel fib...

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Abstract

The invention relates to a low-cement refractory castable for pumping construction, which comprises a dry material and an additive, the dry material comprises the following components in parts by weight: 55-68 parts of refractory aggregate, 12-27 parts of refractory powder, 3-10 parts of superfine powder and 1-9 parts of binding agent, the additive comprises fibers and a composite additive, the weight of the fibers is 0.01-3% of the weight of the dry material, the weight of the composite additive is 0.1-0.5% of the weight of the dry material, and the weight of the water is 5-12% of the weight of the dry material. The invention provides the low-cement refractory castable with the volume density of 2.2-2.8 g/cm3, the castable makes up the defect that the traditional low-cement refractory castable cannot be pumped, realizes the pumping of the low-cement refractory castable, is convenient for on-site pouring construction, solves the difficult problem of vertical conveying of the refractory castable of a high and large furnace body, reduces the workload of workers, and improves the pouring efficiency; and the stirred material reaches the working surface within a short time, so that the working surface can be prevented from being added with water again, and the performance of the refractory lining is effectively ensured.

Description

technical field [0001] The invention relates to the technical field of building materials, in particular to a low-cement refractory castable for pumping construction. Background technique [0002] The high temperature industry is inseparable from the furnace lining made of refractory materials. The furnace lining made of refractory materials plays the role of fire resistance, wear resistance and heat insulation. The different manufacturing methods of refractory materials can be divided into: shaped refractory materials and unshaped refractory materials. Among them, shaped refractory materials generally refer to refractory bricks, whose shape has standard rules, and can also be temporarily processed according to needs during masonry. Refractory castables in unshaped refractory materials are composed of various aggregates or aggregates and a Compared with refractory bricks and other shaped refractory materials, it has the advantages of free shape, good integrity, and strong s...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B35/66C04B35/106
CPCC04B35/66C04B35/106C04B2235/3826C04B2235/3244C04B2235/5212C04B2235/5216C04B2235/5224C04B2235/447C04B2235/428C04B2235/402C04B2235/96
Inventor 苏彦彬吴三涛曹高攀张志健张明志靳景东
Owner HENAN YU & NEW ENERGY SAVING BUILDING MATERIALSCO
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