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Preparation method of rock wool thermal-insulation material and rock wool

A technology of thermal insulation material and rock wool, which is applied in the field of thermal insulation material manufacturing to achieve the effect of improving compressive strength, good effect and increasing water repellency

Active Publication Date: 2014-10-08
MAANSHAN HONGDA INSULATION MATERIAL
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0009] Aiming at the problem that the slag ball content (particle size greater than 0.25mm) of the existing thermal insulation material is too large, it is necessary to further reduce heat loss and improve its compressive strength, the present invention provides a preparation method of rock wool thermal insulation material and rock wool, which not only The slag ball content (particle size greater than 0.25mm) is small, and the heat preservation effect is good, and various performances are excellent

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0036] A preparation method of rock wool insulation material, the steps are:

[0037] (1) Raw material processing, mix the raw materials according to 750kg / batch of basalt, 50kg / batch of white rock, 200kg / batch of slag, and 250kg / batch of coke. In the process, keep the temperature in the cupola at 795°C to melt and burn the raw materials; add liquid oxygen when the raw materials are melted and burned, and the amount of liquid oxygen is 30m 3 / batch; The slag used in the present embodiment is the obtained slag of Masteel ironmaking.

[0038] (2) material fibrosis, the solution that melts in the step (1) is through centrifugation into fiber, becomes fibrous, sprays phenolic resin in the centrifugal process, and phenolic resin is 2402 type phenolic resins, and the amount of spraying of resin is 55kg / tons of fiber;

[0039] (3) collecting cotton, collecting the fibers centrifuged into fibers in step (2);

[0040](4) stacking, the fiber collected in the step (3) is turned into...

Embodiment 2

[0046] With embodiment 1, difference is that in step (1) raw material is mixed according to 740kg / batch of basalt, 55kg / batch of white rock, 180kg / batch of slag, 260kg / batch of coke, pulverize after mixing, preheat to 450 ℃, After preheating, the raw materials are added to the cupola, and the temperature in the cupola is kept at 75°C to melt and burn the raw materials; the amount of resin sprayed in step (2) is 35kg / ton of fiber; the solidified temperature in step (5) is 200 ℃.

[0047] The size of the cut thermal insulation rock wool board is 1000mm in length, 600mm in width, 50mm in thickness and 81kg / m in density 3 . The performance of the thermal insulation rock wool board was tested. The average fiber diameter is 4.3μm, the maximum service temperature is 640°C, the content of slag balls (particle size greater than 0.25mm) is 3.1%, which is much better than the existing technology, and the water repellency rate is 99.6%. , the short-term water absorption is 0.17kg / m 3 (...

Embodiment 3

[0049] With embodiment 1, difference is that in step (1) raw material is mixed according to 760kg / batch of basalt, 45kg / batch of white rock, 210kg / batch of slag, 240kg / batch of coke, pulverize after mixing, preheat to 550 ℃, After preheating, the raw materials are added into the cupola, and the temperature in the cupola is kept at 885°C to melt and burn the raw materials; the amount of resin sprayed in step (2) is 47kg / ton of fiber; the solidified temperature in step (5) is 300 ℃.

[0050] The size of the cut thermal insulation rock wool board is 1000mm in length, 600mm in width, 50mm in thickness and 79kg / m in density 3 . The performance of the thermal insulation rock wool board was tested. The average fiber diameter is 4.1 μm, the maximum service temperature is 660 ° C, the content of slag balls (particle size greater than 0.25 mm) is 3.3%, which is much better than the existing technology, and the water repellency rate is 99.4%. , the short-term water absorption is 0.19kg...

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Abstract

The invention discloses a preparation method of a rock wool thermal-insulation material and a rock wool, belonging to the field of manufacturing of thermal-insulation materials. The method comprises the following steps: (1) raw material processing; (2) material fiberization: centrifugating the molten solution in the step (1) to form fibers while spraying 35-55kg of phenol aldehyde resin to every ton of fibers; (3) wool collection: collecting the fibers formed by centrifugation in the step (2); (4) superposition: converting the fibers collected in the step (3) into sheet-shaped fiber ribbons; (5) curing: curing the superposed fiber ribbons in the step (4); (6) compression: compressing the superposed fiber ribbons while curing to obtain a rock wool thermal-insulation board; and (7) cutting and packaging. The rock wool has the advantage of low content of slag balls (with the particle size of greater than 0.25mm), favorable thermal-insulation effect and better performance indexes than the prior art.

Description

technical field [0001] The invention belongs to the field of thermal insulation material manufacturing, and more specifically relates to a preparation method of rock wool thermal insulation material and rock wool. Background technique [0002] Insulation materials are generally materials with a thermal coefficient less than or equal to 0.2. The development of thermal insulation materials is rapid, and the use of good thermal insulation technology and materials in industry and construction can often achieve twice the result with half the effort. Thermal insulation measures and materials are used for thermal insulation of industrial equipment and pipelines. Airgel was first applied to the thermal insulation lining of space suits developed by NASA. The thermal insulation lining has the characteristics of low thermal conductivity, low density, high flexibility, fireproof and waterproof. . Its thermal conductivity at room temperature is 0.018W / (K m) and it is absolutely waterpr...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B26/12C03B37/00
CPCY02P40/57
Inventor 束青华何海兵杨勇
Owner MAANSHAN HONGDA INSULATION MATERIAL
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