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Method for preparing high-strength burnt magnesium chrysolite light material through foam method

A technology for firing forsterite and lightweight materials, which is applied in the field of refractory and thermal insulation materials, can solve problems such as impact on use, high cost, and low degree of industrialization, and achieve the effects of reducing heat loss, low cost, and reducing thermal pollution

Active Publication Date: 2014-12-17
湖北红花高温材料股份有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, due to the contradiction between the high strength and high porosity of the material, it is difficult to obtain the forsterite light material with high strength and good thermal insulation performance in the current method of producing forsterite light material; at the same time, it does not directly use the abundant forsterite mineral in our country resource
Therefore, the cost is higher, the degree of industrialization is not high, and its use is also affected

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0014] A method for preparing high-strength forsterite light material by foaming method. First, 62kg of forsterite raw ore powder, 23kg of light burnt magnesium oxide powder and 10kg of magnesium chloride hexahydrate are mixed, and 17kg of water is added, and stirred evenly Then, add 20L of cement foaming agent, continue to stir for 5-10 minutes, and directly cast into the mold; after 24 hours of natural curing, demoulding, and then dry at 80 ℃ for 24 hours, at 1350 ℃ Calcined for 2.5 hours under the conditions, and after natural cooling, a high-strength sintered forsterite lightweight material is obtained, with a compressive strength of 13MPa and a bulk density of 1.5g / cm 3 . The lightweight material can be used in heating furnaces, boilers, annealing furnaces or heat treatment furnaces whose temperature is below 1200°C.

Embodiment 2

[0016] A method for preparing high-strength burned forsterite lightweight material by foaming method, except that the foaming agent is vegetable protein biological protein or vegetable protein is hydrolyzed in sodium dodecylbenzene sulfonate to obtain foaming agent, the rest is the same Example 1. The prepared high-strength fired forsterite lightweight material has a compressive strength of 12.5MPa and a bulk density of 1.4g / cm 3 . The lightweight material can be used in heating furnaces, boilers, annealing furnaces or heat treatment furnaces whose temperature is below 1100°C.

Embodiment 3

[0018] A method for preparing high-strength burnt forsterite lightweight material by foaming method. Firstly, 68kg of forsterite ore powder, 15kg of lightly burned magnesium oxide powder and 12kg of magnesium chloride hexahydrate are mixed, and 15kg of water is added and stirred evenly After that, add 33L of foaming agent, continue to stir for 5-10 minutes, and directly cast into the mold; after 24 hours of natural curing, demoulding, and then dry at 100 ℃ for 30 hours, at 1300 ℃ Fired in the air for 3 hours, and after natural cooling, a high-strength forsterite light-weight material can be obtained, with a compressive strength of 11MPa and a bulk density of 1.0g / cm 3 . The lightweight material can be used in annealing furnaces or heat treatment furnaces whose temperature is below 1000°C.

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Abstract

The invention relates to a method for preparing a high-strength burnt magnesium chrysolite light material through a foam method. The preparation method comprises the following steps: mixing magnesium chrysolite raw ore powder, light calcined magnesia powder and magnesium chloride hexahydrate, uniformly stirring in water, adding a foaming agent, fully stirring, and molding by casting in a mold; naturally curing and demolding within 24 hours, drying at the temperature of 60-110 DEG C for 12-36 hours, calcining at the temperature of 1,200-1,400 DEG C for 2-6 hours, and naturally cooling to prepare the high-strength burnt magnesium chrysolite light material. The burnt magnesium chrysolite light material has the volume density of 0.6-1.5g / cm<3> and is excellent in performance, high in service temperature, long in service life and suitable for various industrial thermal equipment at the temperature of 1200 DEG C or below.

Description

Technical field [0001] The present invention is the technology field of refractory insulation materials.In particular, it involves a method of bubble legal system to prepare high -intensity firing into magnesium olive light materials. Background technique [0002] The outer wall of the industrial kiln of modern industrial production thermal power plants, nuclear power plants and steel plants, as well as oil, chemical, building materials and other factories generally accounts for about 5-30%of the total heat loss of kiln.The heat dissipation to the atmospheric environment is equivalent to more than 100 million tons of standard coal, which not only consumes a lot of energy, but also is one of the main culprits that cause urban heat island effects.The main preventive measures for heat pollution for such cooling are to strengthen insulation and heat insulation measures, and use good thermal insulation materials. [0003] The light insulation and insulation materials for industrial th...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C04B35/66C04B38/10C04B35/622
Inventor 邓承继祝洪喜汪盛明易成雄张小东
Owner 湖北红花高温材料股份有限公司
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