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Novel oversize burning-free mullite bedding brick

A super-sized, mullite technology, applied in the field of new super-sized unburned mullite paving bricks, can solve the problems of reduced density and strength, high porosity, etc. The effect of uniformity

Active Publication Date: 2010-07-28
SHANDONG JIATENG IND CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, as the temperature rises, the carbon is oxidized, resulting in high porosity, resulting in a decrease in density and strength

Method used

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  • Novel oversize burning-free mullite bedding brick
  • Novel oversize burning-free mullite bedding brick
  • Novel oversize burning-free mullite bedding brick

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0032] 1) Determine the optimal ratio of aggregate

[0033] In this experiment, a group of formulations were designed to determine the optimal ratio of aggregates. The experimental formulations are shown in Table 1. For the flexural strength, see figure 1 .

[0034] Table 1 Different aggregate ratios

[0035]

[0036]

[0037] According to the flexural strength test, the composite index of room temperature flexural strength and 1200°C flexural strength of formula A2 is better than other formulas. This formula has certain room temperature strength and high flexural strength at 1200°C. So we decided to choose the aggregate formulation of the second group of samples as the aggregate ratio in the future.

[0038] 2) Determination of the amount of cement and silica fume

[0039] Since the high cement consumption will cause the performance of the product to decline at medium and high temperatures, it is necessary to reduce the cement consumption as low as possible. The solu...

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Abstract

A novel oversize burning-free mullite bedding brick belongs to the technical field of refractories. The brick is characterized by comprising the following chemical components in terms of oxides: not more than 32.07% of SiO2, not more than 1.21% of Fe2O3 and not less than 63.22% of Al2O3. The invention breaks through the thinking that the oversize refractories can achieve high strength only after being sintered. In the brick, various additives are creatively adopted, thus improving the strength and the thermal shock resistance of the unburned brick during use and developing the novel oversize burning-free mullite bedding brick. The invention adopts the shock molding process with high frequency of 100-200Hz, thus substantially improving the density of the burning-free mullite bedding brick and the uniformity of the grains.

Description

technical field [0001] The invention belongs to the technical field of refractory materials, and in particular relates to a novel oversized non-burning mullite bottom brick. Background technique [0002] In recent years, due to the use of high-quality, high-performance raw materials including binders, the application of ultra-fine powder and dispersion technology, the introduction of high-efficiency additives, the optimization of the full range of particle size distribution, the introduction of certain non-oxides to make oxide-non-oxide Composite materials, the use of new advanced construction methods and the strengthening of basic research, etc., the development of monolithic refractory materials in terms of material, variety, performance, construction, and application is very active. In the early 1960s, the use of pure calcium aluminate cement with aluminum oxide content made traditional castables widely used in various high-temperature equipment. In traditional castables...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B28/00C04B14/04
Inventor 王立朝
Owner SHANDONG JIATENG IND CO LTD
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