Flint clay brick with acid and alkali resistance, wear resistance and thermal shock resistance as well as preparation method thereof

A manufacturing method and technology for resisting thermal shock, applied in the field of refractory materials, can solve the problems of high acid-base atmosphere, high ash concentration and high flow rate, and achieve the effects of good thermal shock resistance, simple manufacturing process and high wear resistance

Inactive Publication Date: 2013-07-31
JIANGSU DAOJUE GRAND NEW ENERGY VEHICLE
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The atmosphere at this part of the calciner is high acid-base atmosphere, high flow rate, high ash concentration, and serious wear, especially due to the erosion of high-speed gas-solid two-phase flow, the wear of this part is very serious

Method used

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  • Flint clay brick with acid and alkali resistance, wear resistance and thermal shock resistance as well as preparation method thereof
  • Flint clay brick with acid and alkali resistance, wear resistance and thermal shock resistance as well as preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] 15 parts of 3~5mm burnt gem aggregate, 30 parts of 1~3mm burnt gem aggregate, 20 parts of 0~1mm burnt gem aggregate, 23 parts of 220 mesh burnt gem fine powder, 5 parts of silicon nitride fine powder powder, 5 parts of 320-mesh zircon mullite fine powder, 2 parts of Suzhou No. 3 mud, 9 parts of composite binder, and 4 parts of water are mixed and pressed on a 1,000-ton friction brick press. The bulk density of the semi-finished product is 2.10~2.30g. cm -3 . After baking at 90°C for 24 hours, the residual moisture of the green body is ≤2%. Firing can be fired in pusher kiln or tunnel kiln, and fired at 1350°C for 4 hours to get the desired finished acid and alkali resistant, wear resistant, thermal shock and coke bricks.

Embodiment 2

[0030] Take 10 parts of 3~5mm coke gemstone aggregate, 36 parts of 1~3mm coke gemstone aggregate, 15 parts of 0~1mm coke gemstone aggregate, 26 parts of 220 mesh coke gemstone fine powder, 6 parts of silicon nitride fine powder , 6 parts of 320-mesh zircon mullite fine powder, 1 part of Suzhou No. 3 mud, 8 parts of composite binder, 5 parts of water are mixed and pressed on a 1000-ton friction brick press, and the bulk density of semi-finished products is 2.1~2.3g.cm -3 . After baking at 80°C for 36 hours, the residual moisture of the green body is ≤2%. Firing can be fired in pusher kiln or tunnel kiln, and fired at 1350°C for 3 hours to obtain the desired finished acid and alkali resistant, wear-resistant, heat-shock, and coke-resistant gemstone bricks.

Embodiment 3

[0032] The physical properties of the acid and alkali-resistant, wear-resistant, heat-shock, and coke bricks of the present invention are tested, and the results are as follows:

[0033] Table 1 The physical properties of the acid and alkali-resistant wear-resistant thermal shock-resistant coke gem brick brick of the present invention

[0034]

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Abstract

The invention discloses a flint clay brick with acid and alkali resistance, wear resistance and thermal shock resistance. The flint clay brick comprises the following components in parts by weight: 5-15 parts of 3-5mm flint clay aggregates, 30-40 parts of 1-3mm flint clay aggregates, 10-20 parts of 0-1mm flint clay aggregates, 15-25 parts of flint clay fine powder, 5-10 parts of silicon nitride fine powder, 5-7 parts of zircon mullite powder, 1-3 parts of Suzhou cement No.3, 8-10 parts of composite binding agent and 4-6 parts of water. The invention also discloses a method for preparing the flint clay brick with acid and alkali resistance, wear resistance and thermal shock resistance. The flint clay brick with acid and alkali resistance, wear resistance and thermal shock resistance has the performances of high acid and alkali resistance, high intensity, high refractoriness, high wear resistance and high thermal shock resistance, and is suitable for a dry-method cement kiln decomposition furnace and other thermal equipment. The preparation process of the flint clay brick is simple and easy to realize.

Description

technical field [0001] The invention belongs to the field of refractory materials, and in particular relates to an acid and alkali-resistant, wear-resistant, heat-shock, and scorched gemstone brick and a manufacturing method thereof. Background technique [0002] In the new dry process cement kiln, the calciner is one of the most critical components, and the refractories used in these parts must have good acid and alkali resistance, wear resistance and thermal shock stability. Anti-stripping high-alumina bricks or high-alumina castables are most commonly used in these parts. The part of the decomposition furnace has a high acid-base atmosphere, high flow rate, high ash concentration, and serious wear, especially due to the erosion of high-speed gas-solid two-phase flow, the wear of this part is very serious. Contents of the invention [0003] The purpose of this invention is to overcome the above deficiencies, and the technical problem to be solved is to provide an acid a...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C04B35/66
Inventor 山国强周宁生
Owner JIANGSU DAOJUE GRAND NEW ENERGY VEHICLE
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