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

Baking-free corrosion resistant facing brick and manufacture method thereof

A corrosion-resistant, facing brick technology, applied in the direction of sustainable waste treatment, solid waste management, climate sustainability, etc., can solve the problems of high cost, non-degradable, poor bonding ability, etc., to achieve strong acid and alkali corrosion resistance, The effect of rapid early strength development and less environmental pollution

Inactive Publication Date: 2008-12-03
SOUTH CHINA UNIV OF TECH +1
View PDF0 Cites 4 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, as a kind of ceramic materials, acid-resistant ceramic anti-corrosion materials also have many inherent problems, such as: production consumes a lot of energy, ceramic products need to be sintered, and the calcination temperature is high; using heavy oil as fuel produces a lot of waste gas that pollutes the environment; Ceramic products are non-degradable after being discarded, difficult to reuse, and costly; ceramics need to be bonded to the surface of buildings with cement mortar or other materials, which have poor bonding ability and are easy to fall off

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

[0021] In terms of parts by mass, 7 parts of metakaolin calcined at 700°C for 45 minutes (calcined in an external heating oil-fired industrial rotary furnace) and 3 parts of water-quenched blast furnace slag were added to 4 parts of prepared modulus of 1.4, concentration 40% sodium silicate solution, after stirring evenly, pour the stirred powder into the steel mold, flatten and add the top mold, pressurize to 40MPa by the press and keep the constant pressure for 120S, and demould the test piece After curing for 1 day under the condition of 20±2°C and relative humidity of 90%, put it into 5% sodium hydroxide solution and soak for 5 days to obtain the fire-free and corrosion-resistant facing brick. After testing, the 1d compressive strength of the prepared non-fired corrosion-resistant facing brick is 24.8MPa, the 28d compressive strength is 37.2MPa, and the 28d bending strength can reach 7.0MPa. Soaked in 0.025mol / L sulfuric acid and 0.05mol / L hydrochloric acid mixed acid solu...

Embodiment 2

[0023] In terms of parts by mass, 7 parts of metakaolin calcined at 750°C for 30 minutes (calcined in an external heating oil-fired industrial rotary furnace) and 3 parts of water-quenched blast furnace slag were added to 5 parts of prepared modulus of 1.6, concentration In 45% sodium silicate solution, after stirring evenly, pour the stirred powder into the steel mold, flatten and add the top mold, pressurize to 30MPa and keep the constant pressure for 120S through the press, and the test piece after demoulding After curing for 1 day under the condition of 20±2°C and relative humidity of 95%, put it into a 5% sodium hydroxide solution and soak for 3 days to obtain an unfired and corrosion-resistant facing brick. After testing, the 1d compressive strength of the prepared non-fired corrosion-resistant facing brick is 32.4MPa, the 28d compressive strength is 48.3MPa, and the 28d bending strength can reach 7.6MPa. Soaked in 0.025mol / L sulfuric acid and 0.05mol / L hydrochloric acid...

Embodiment 3

[0025] In terms of parts by mass, 8 parts of metakaolin calcined at 750°C for 45 minutes (calcined in an external heating oil-fired industrial rotary furnace) and 2 parts of water-quenched blast furnace slag were added to 5 parts of prepared modulus of 1.6, concentration In 45% sodium silicate solution, after stirring evenly, pour the stirred powder into the steel mold, flatten and add the top mold, pressurize to 30MPa and keep the constant pressure for 120S through the press, and the test piece after demoulding After curing for 1 day under the condition of 20±2°C and relative humidity of 90%, put it into 8% sodium hydroxide solution and soak for 3 days to obtain the non-burning and corrosion-resistant facing brick. After testing, the 1d compressive strength of the prepared non-fired corrosion-resistant facing brick is 21.2MPa, the 28d compressive strength is 33.0MPa, and the 28d bending strength can reach 6.1MPa. Soaked in 0.025mol / L sulfuric acid and 0.05mol / L hydrochloric a...

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

PropertyMeasurementUnit
compressive strengthaaaaaaaaaa
compressive strengthaaaaaaaaaa
flexural strengthaaaaaaaaaa
Login to View More

Abstract

The invention relates to a baking-free corrosion-resisting face brick and a preparation method thereof. The preparation method comprises the following steps that: calculated by mass portion, 7 to 10 portions of metakaolin and 0 to 3 portions of water quenched blast furnace slag are stirred and mixed evenly; then, 4 to 6 portions of sodium silicate solution is added as an exciting agent, and the mixture is stirred and mixed evenly; and the materials are made into the baking-free corrosion-resisting face brick through moulding, pressing, demoulding and maintaining. The 1d compressive strength of the made face brick can reach to 20 to 50MPa; when dipped in a mixed acid solution with the pH value equal to 1 and consisting of 0.025mol / L sulphuric acid and 0.05mol / L hydrochloric acid for 28d, both the strength loss and the mass loss of the face brick are respectively less than 10 percent. Through adopting the sodium silicate solution to excite metakaolin and water quenched blast furnace slag, the face brick is made through pressing forming at normal temperature without adopting calcination, and has less energy consumption and less environment pollution; therefore, the face brick has environment-friendly property, strong cementing power, corrosion resistance against most acids and alkalis, convenient use and excellent durability.

Description

technical field [0001] The invention relates to the field of cementitious materials, in particular to a burn-free and corrosion-resistant facing brick. technical background [0002] At present, most of the materials used in the market for acid-resistant floors, acid-resistant walls, acid-resistant storage tanks, storage tanks, acid discharge pipes and chemical plant buildings are acid-resistant ceramic anti-corrosion materials. This kind of acid-resistant brick is widely used in the chemical industry. The main advantages are strong acid resistance, good chemical stability, and a certain degree of alkali resistance. However, as a kind of ceramic materials, acid-resistant ceramic anti-corrosion materials also have many inherent problems, such as: production consumes a lot of energy, ceramic products need to be sintered, and the calcination temperature is high; using heavy oil as fuel produces a lot of waste gas that pollutes the environment; After being discarded, ceramic pro...

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
Patent Type & Authority Applications(China)
IPC IPC(8): C04B30/00C04B40/00C04B14/10C04B18/14
CPCC04B2201/50C04B28/001C04B2111/00017C04B40/029Y02W30/91C04B12/04C04B18/141C04B40/0032C04B40/0071
Inventor 文梓芸任俊殷素红徐海军杨建军钟开红徐小彬
Owner SOUTH CHINA UNIV OF TECH