Mineral wool waste residue modified glass magnesium flat plate and preparation method thereof

A glass magnesium plate and mineral wool technology, applied in the field of building materials and resource recycling, can solve the problems of limited digestion, waste of resources and energy, etc., and achieve the effect of eliminating the phenomenon of brine reversion, dense internal structure, and structural renewal

Active Publication Date: 2018-03-27
陕西维安建筑科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] Faced with increasingly stringent environmental protection regulations, and in order to reduce the storage space of waste materials, the usual practice of manufacturers is to mix them with cement, make blocks and return them to the furnace to melt and blow fibers. In order not to affect product quality, the upper limit of the addition ratio of waste slag blocks is new 10% of raw materials, this approach not only limited digestion but also caused a huge waste of resources and energy

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  • Mineral wool waste residue modified glass magnesium flat plate and preparation method thereof

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[0026] The invention also discloses a method for preparing glassy magnesium slabs by using mineral wool waste slag, which includes: grinding the mineral wool cutting waste slag, soaking the mineral wool furnace bottom waste slag in magnesium chloride solution or magnesium sulfate solution, and using the propulsive force of the liquid to make the furnace bottom waste slag Uniformly disperse to form a premix; mix the ground mineral wool cutting waste, premix, magnesium oxide, light aggregate and admixture, and dry; then dehydrate and maintain until the moisture content is less than 8%, and obtain mineral wool waste slag modified Sexual glass magnesium plate.

[0027] Wherein, magnesium chloride solution or magnesium sulfate solution and magnesium oxide form a gelling material, and the molar ratio of magnesium oxide: magnesium chloride or magnesium sulfate is 7-13:1. Specifically, the quality of mineral wool cutting waste slag accounts for 10% to 20% of the mass of the cementitio...

Embodiment 1

[0033] Use a ball mill to grind mineral wool cutting waste to 0.075-0.120mm for later use; put 6.8kg of mineral wool bottom waste slag into 58.5kg of magnesium sulfate solution for soaking, use the propulsive force of the liquid to evenly disperse the bottom waste slag to form a premixed solution. Mix 13.6kg of mineral wool cutting waste, premix, 68kg of magnesia, and 2.0kg of admixture and pour it into the mold, then send it to a tunnel dryer at 180°C for 15 minutes, and then dry the dried glass magnesium After demoulding, the slab is transferred to the warehouse for natural maintenance until the moisture content is less than 8%, and then a glass magnesium slab of 2440mm×1220mm×5mm is made, the total mass of the slab is 148.9kg, and the density of the slab is 1000kg / m 3 . The performance test was done on the 21st day, see Table 1 for details.

Embodiment 2

[0035] Use a ball mill to grind mineral wool cutting waste to 0.075-0.120 mm for later use; put 12 kg of mineral wool bottom waste slag into 105 kg of magnesium sulfate solution for soaking, use the propulsive force of the liquid to evenly disperse the bottom waste slag to form a premixed solution. Mix and stir 24kg of mineral wool cutting waste, premix, 122kg of magnesium oxide, 1.3kg of polyphenylene particles, and 2.0kg of admixture, pour it into a mold, and then put it into a tunnel dryer at 80°C for 20 minutes. The dried glass magnesium slab is removed from the mold and transferred to the warehouse for natural maintenance until the moisture content is less than 8%, and then a 2440mm×1220mm×15mm glass magnesium slab is made, with a total mass of 267.9kg and a density of 600kg / m 3 . The performance test was done on the 21st day, see Table 1 for details.

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Abstract

The invention discloses a mineral wool waste residue modified glass magnesium flat plate and a preparation method thereof. The magnesium flat plate comprises mineral wool cutting waste residue, mineral wool furnace bottom waste residue, a gelling material, a light aggregate, and an additive; and the gel material is composed of magnesium oxide and magnesium chloride, or magnesium oxide and magnesium sulfate. The preparation method comprises the following steps: grinding the mineral wool cutting waste residue; immersing the mineral wool furnace bottom waste residue by using a magnesium chloridesolution or a magnesium sulfate solution so that the furnace bottom waste residue can be uniformly dispersed to obtain premix liquid; mixing the ground mineral wool cutting waste residue, the premix liquid, magnesium oxide, the light aggregate and an additive, and drying a mixture; then performing dehydrated maintenance until a water content is less than 8%, and obtaining the glass magnesium flatplate. The method fully uses fiber characteristic of crack resistance of the mineral wool cutting waste residue, hydraulic activity of the furnace bottom waste residue, and water proofness of phenolicresin on the surface, and provides the glass magnesium flat plate which has the advantages of updated structure, better comprehensive property, and lower cost.

Description

technical field [0001] The invention belongs to the field of recycling and utilization of building materials and resources, and relates to an application and a preparation method of using mineral wool waste residues to prepare modified glass magnesium plates. Background technique [0002] With the popularization and application of external wall insulation technology in China, the market of thermal insulation materials for external enclosure structures has shown a prosperous development trend. In 2015, with the promulgation and implementation of the "Code for Design of Building Fire Protection", the use of organic thermal insulation materials was restricted, and rock wool Inorganic insulation boards / bars represented by glass wool and glass wool have ushered in huge market opportunities. The newly-built production lines have been fully rolled out across the country, and the production capacity has risen sharply. According to the statistics of China Thermal Insulation and Energ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B28/30C04B28/32C04B111/20
CPCC04B28/30C04B28/32C04B2111/20C04B2201/20C04B2201/50C04B22/066C04B22/142C04B14/42C04B14/46C04B18/26C04B18/24C04B18/027C04B16/08C04B14/24C04B14/202C04B2103/40C04B2103/65C04B2103/0068
Inventor 谢诚张敏张立
Owner 陕西维安建筑科技有限公司
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