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Production process for silicification of dry powder

A production process and dry powder technology, applied in fire protection equipment and other directions, can solve the problems of uneconomical, large hygroscopicity, and large environmental pollution, and achieve the effect of good effect, uniform oil encapsulation, and small environmental pollution.

Active Publication Date: 2015-02-18
SUZHOU WUYUE SYNTHETIC FIRE SCI TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] 1. The amount of silicone oil used is large, the cost is high, and it is uneconomical;
[0006] 2. Siliconization is uneven, some dry powders are covered with more silicone oil, some are less, and the quality is not guaranteed;
[0007] 3. High hygroscopicity;
[0008] 4. Dust and oil leak out during fuel injection, causing serious environmental pollution;
[0009] 5. The nozzle is easy to block, which is not conducive to normal production and cumbersome operation

Method used

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  • Production process for silicification of dry powder
  • Production process for silicification of dry powder

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0032] Such as figure 1 Shown, a kind of dry powder silicification production process, described process comprises the steps:

[0033] The first step is to weigh the dry powder raw material ammonium sulfate and ammonium phosphate.

[0034] In the second step, the above-mentioned weighed raw materials are put into a pulverizer for crushing, and the speed of the pulverizer is adjusted to 2800 rpm, and the original intermittent point operation is changed into a continuous line operation; while pulverizing, add Silicone oil, auxiliary materials such as white carbon black and mica powder, etc., the silicone oil here is prepared with organic solvents such as benzene and banana water in a ratio of 1:3, and then added to the pulverizer to siliconize the raw materials and oil them. Pack oil, control the crushing speed at about 1 ton / hour, so as to adjust the amount of silicone oil.

[0035] By adding silicone oil when crushing the raw materials and carrying out siliconization at the ...

Embodiment 2

[0042] Such as figure 2 As shown, all the other are the same as in Example 1, the difference is that in the third step of the above-mentioned technological process, in this operation process, the material with the qualified particle size separated is put into the next step operation, otherwise the material is re- Put it into the pulverizer in the second step for crushing. Through this step, the raw materials can be fully utilized, saving costs and improving economic benefits.

Embodiment 3

[0044] The rest is the same as the above-mentioned embodiment, the difference is that the speed of the pulverizer is adjusted to 3200 rpm, and the temperature of the mixer is controlled at 200°C, which can achieve the above-mentioned advantages of less oil consumption, uniform oil mixing, and less environmental pollution. Purpose.

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Abstract

The invention discloses a production process for silicification of dry powder. The existing technological process is optimized, silicone oil and auxiliary materials are added during crushing of the dry powder, then separation and mixing drying are performed, crushing and oil coating can be performed on the dry powder simultaneously through the adding of the process, so that when the dry powder in the same amount is coated with oil, required silicone oil amount is low, and oil coating is even, the effect is good; and simultaneously, outside leakage of dust and silicone oil can be avoided and environmental pollution is reduced after adoption of the process.

Description

technical field [0001] The invention relates to the field of fire fighting, in particular to a dry powder silicification production process. Background technique [0002] Halon fire extinguishing agent has the characteristics of low cost and high efficiency, but the main component of halon fire extinguishing agent is halon, which will cause serious damage to the atmospheric ozone layer after use, so it has been discontinued. Since then, there has been no ideal substitute for fire protection Extinguishing. [0003] At present, the most used product with better effect is fire-fighting dry powder. Its main raw materials are ammonium sulfate and ammonium phosphate, which are easy to absorb water and agglomerate, so it is not conducive to the use, preservation and promotion of dry powder. However, siliconization of dry powder is used in dry powder production. The process is very important. Siliconization of dry powder is to apply a layer of silicone oil evenly on the outside of ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): A62D1/00
Inventor 张永安
Owner SUZHOU WUYUE SYNTHETIC FIRE SCI TECH
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