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Mullite flame-proof spray paint

A technology of mullite and spray paint, which is applied in the field of spray paint, can solve the problems of lack of fire-resistant spray paint, achieve high early strength, improve technical parameters, and increase flexibility

Inactive Publication Date: 2009-07-29
ZHEJIANG KINGCRED NEW MATERIAL CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This construction method can realize rapid construction and rapid temperature rise, but there is no suitable fire-resistant spray coating for use in the prior art

Method used

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  • Mullite flame-proof spray paint

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0035] Based on the damage mechanism of refractory materials in various parts of the new dry-process cement rotary kiln system, and according to the practical experience of our company, when designing a new mullite refractory spray coating for the spraying method, our basic principle is that the selected raw materials need Low body density, easy collection of raw materials, relatively uniform particles, low rebound rate, and relatively fast drying speed. Under the guidance of this idea, after continuous research and experimentation, the researchers found that the following ratio should be followed in the production process:

[0036] Mullite 80%,

[0037] Pure calcium aluminate cement 7%,

[0038] Silica fume 3%,

[0039] Aluminum Lactate 3%,

[0040] Water 7%.

[0041] The mullite is low aluminum mullite with an aluminum content of 40-60%. The aluminum content of mullite in such an aluminum-containing range is easier to cooperate with other additives to make the aluminum ...

Embodiment 2

[0044] Normally, as a manufacturer, the ratio we adopt is:

[0045] Mullite 75%,

[0046] Pure calcium aluminate cement 7%,

[0047] Silica fume 8%,

[0048] Aluminum Lactate 6%,

[0049] Water 9%.

[0050] The mullite is low aluminum mullite with an aluminum content of 45%. Under such proportioning conditions, the performance parameters of the obtained mullite refractory spray coating are:

[0051]

[0052] Such performance conditions can effectively reduce the kiln shutdown time. And ensure the smooth progress of spraying construction.

Embodiment 3

[0054] For some small and medium-sized enterprises, hoping to reduce costs, you can use the following formula.

[0055] Mullite 70%,

[0056] Pure calcium aluminate cement 10%,

[0057] Silica fume 10%,

[0058] Aluminum Lactate 5%,

[0059] Water 5%.

[0060] The mullite is low aluminum mullite with an aluminum content of 40%.

[0061] Under such a ratio, the basic standard requirements can also be met under the premise of slightly sacrificing part of the performance. At the same time, it can save a lot of cost.

[0062] The invention can greatly improve the construction efficiency when used in the spraying process, and can reduce the construction manpower. Due to the traditional pouring process, at least 15 people must work at the same time in a set of processes including material preparation, material transportation, and pouring. And using the spraying process, it can be reduced to 8 people. At the same time, the weight of the product is reduced, making the transpor...

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Abstract

The invention discloses a refractory coat-spraying material of mullite, comprising the following components according to the weight percentage: 70-80% of mullite, 7-10% of pure calcium aluminate cement, 3-10% of silica fume, 3-6% of aluminum lactate and 5-10% of water. In the invention, with the proposal adopted, firstly, interconnected micro-pores are generated on cast basal bodies by adding antiknock agent aluminum lactate (polynuclear fluor-complex polymerized by hydroxylated aluminum ions), so that the steam generated during baking is easily exhausted, thus reducing gas pressure in liners and attaining the aims of fast drying and explosion prevention; secondly, low aluminum mullite is adopted as a primary raw material, so that the products have the advantages of low volume density and high early strength, etc. At the same time, the low volume density can ensure both heat preservative function and refractory function; thirdly, the coat-spraying material can adopt such forms of construction as spraying, smearing or casting, thus improving the flexibility of the construction of products.

Description

technical field [0001] The invention relates to a spray coating, in particular to a mullite refractory spray coating. Background technique [0002] At present, with the rapid development of domestic new-type dry-process cement rotary kilns, and with the efforts of domestic technical personnel, the refractory materials in the kiln have all been localized, especially the large-scale use of unshaped refractory materials, which is a great opportunity for cement enterprises to put into production. A lot of time has been reduced during masonry and masonry. However, in the past, when the castables at the kiln hood and the tertiary air duct fell off, usually the kiln had to be shut down for more than one day, and when the temperature dropped to room temperature, workers could be sent in to pry off part of the castables, and then set up the mold again. Manual pouring requires more than 3 days of maintenance before it can be re-ignited and put into production. The shutdown time is ve...

Claims

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Application Information

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IPC IPC(8): C04B35/66C04B35/185C04B7/32
Inventor 朱国平刘家祥朱其良唐春强桑新良
Owner ZHEJIANG KINGCRED NEW MATERIAL CO LTD
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