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

Corrosion-resistant lightweight refractory brick and preparation method thereof

A refractory brick and corrosion-resistant technology, which is applied in the field of corrosion-resistant lightweight refractory bricks and their preparation, can solve the problems of unsatisfactory anti-corrosion performance and achieve the effects of shortening the preparation cycle and production cost, simple operation and large size

Inactive Publication Date: 2018-11-20
HEFEI MINGYOU HIGH TEMPERATURE TECH CO LTD
View PDF6 Cites 3 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, its thermal shock resistance and corrosion resistance cannot meet the requirements

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

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0029] This embodiment relates to a corrosion-resistant lightweight refractory brick, comprising the following parts by weight of raw materials: 30 parts of pre-fired alumina powder, 15 parts of fine magnesite powder, 10 parts of pyrophyllite, 9 parts of calcined kaolin, and modified diatomite 9 parts, 7 parts of montmorillonite, 2 parts of phosphoric acid, 3 parts of sodium alginate gel, 2 parts of fumed silica, 3 parts of sodium silicate, 2 parts of dispersant.

[0030] Wherein, the preparation method of the modified diatomite is as follows:

[0031] (1) Soak the diatomaceous earth in 15% hydrochloric acid for 2 hours, wash with deionized water, then soak in 11% sodium hydroxide solution for 2 hours, and then wash with deionized water to neutral ,drying;

[0032] (2) Add sodium carbonate to the diatomaceous earth obtained in step (1), and activate it at a high temperature of 950°C to 1000°C after heating to obtain the modified diatomite.

[0033] Wherein, the pyrophyllite is pyroph...

Embodiment 2

[0046] This embodiment relates to a corrosion-resistant lightweight refractory brick, comprising the following raw materials by weight: 40 parts of pre-fired alumina powder, 25 parts of fine magnesite powder, 20 parts of pyrophyllite, 16 parts of calcined kaolin, and modified diatomite 18 parts, 11 parts of montmorillonite, 4 parts of phosphoric acid, 6 parts of sodium alginate gel, 5 parts of fumed silica, 6 parts of sodium silicate, 4 parts of dispersant.

[0047] Wherein, the preparation method of the modified diatomite is as follows:

[0048] (1) Soak the diatomaceous earth in 15% hydrochloric acid for 2 hours, wash with deionized water, then soak in 11% sodium hydroxide solution for 2 hours, and then wash with deionized water to neutral ,drying;

[0049] (2) Add sodium carbonate to the diatomaceous earth obtained in step (1), and activate it at a high temperature of 950°C to 1000°C after heating to obtain the modified diatomite.

[0050] Wherein, the pyrophyllite is raw pyrophyl...

Embodiment 3

[0063] This embodiment relates to a corrosion-resistant lightweight refractory brick, comprising the following raw materials by weight: 32 parts of pre-fired alumina powder, 19 parts of magnesite powder, 13 parts of pyrophyllite, 10 parts of calcined kaolin, and modified diatomite 11 parts, 8 parts of montmorillonite, 2.6 parts of phosphoric acid, 4 parts of sodium alginate gel, 3 parts of fumed silica, 4 parts of sodium silicate, 2.6 parts of dispersant.

[0064] Wherein, the preparation method of the modified diatomite is as follows:

[0065] (1) Soak the diatomaceous earth in 15% hydrochloric acid for 2 hours, wash with deionized water, then soak in 11% sodium hydroxide solution for 2 hours, and then wash with deionized water to neutral ,drying;

[0066] (2) Add sodium carbonate to the diatomaceous earth obtained in step (1), and activate it at a high temperature of 950°C to 1000°C after heating to obtain the modified diatomite.

[0067] Wherein, the pyrophyllite is raw pyrophylli...

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 discloses a corrosion-resistant lightweight refractory brick which comprises the following raw materials in parts by weight: 30-40 parts of pre-fired alumina powder, 15-25 parts of magnesite fine powder, 10-20 parts of pyrophyllite, 9-16 parts of calcined kaolin, 9-18 parts of modified diatomite, 7-11 parts of montmorillonite, 2-4 parts of phosphoric acid, 3-6 parts of sodium alginate gel, 2-5 parts of fumed silica, 3-6 parts of sodium silicate and 2-4 parts of a dispersing agent. By controlling the ratio between the raw materials, the prepared product is uniform in structure, excellent in mechanical property, excellent in thermal shock resistance and excellent in erosion resistance.

Description

Technical field [0001] The invention belongs to the technical field of refractory materials, and specifically relates to a corrosion-resistant lightweight refractory brick and a preparation method thereof. Background technique [0002] Lightweight refractory bricks, also called heat-insulating refractory bricks, are refractory materials with high porosity, low bulk density and low thermal conductivity. They are characterized by a porous structure (generally 40%-85% porosity) and high thermal insulation. . Lightweight refractory bricks include light high alumina bricks, light corundum bricks, light cordierite bricks, light clay bricks, light silica bricks, light hollow spherical products, etc., and are often used as insulation materials for industrial kiln bodies. It can reduce the quality of the furnace body, simplify the structure of the furnace, reduce fuel consumption, and also help to realize the rapid heating and cooling of the furnace, and improve the production efficiency...

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
IPC IPC(8): C04B33/13C04B35/66
CPCC04B33/13C04B33/1305C04B35/62605C04B35/62675C04B35/636C04B2235/3201C04B2235/3206C04B2235/3217C04B2235/3418C04B2235/3427C04B2235/656C04B2235/9607C04B2235/9669
Inventor 王虎
Owner HEFEI MINGYOU HIGH TEMPERATURE TECH CO LTD