One-step forming method of glass-ceramic plate by using molten blast furnace slag

A glass-ceramic and blast furnace slag technology, applied in glass forming, glass manufacturing equipment, manufacturing tools, etc., can solve the problems of high production cost, complex process, high energy consumption, etc., to reduce production cost and manufacturing cycle, simplify Preparation steps, the effect of avoiding energy waste

Active Publication Date: 2019-03-05
NORTH CHINA UNIVERSITY OF SCIENCE AND TECHNOLOGY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0007] The object of the present invention is to provide a method for forming glass-ceramics in one step by using the sensible heat of molten blast furnace slag with simple technology and high efficiency, so as to overcome the complex process, large energy consumption, high production cost and obvious problems of blast furnace slag in the existing glass-ceramic preparation process. Insufficient heat resource waste

Method used

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  • One-step forming method of glass-ceramic plate by using molten blast furnace slag
  • One-step forming method of glass-ceramic plate by using molten blast furnace slag
  • One-step forming method of glass-ceramic plate by using molten blast furnace slag

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030] (1) The amount of blast furnace slag is designed to be 37%, and the target composition (wt.%) of blast furnace slag glass ceramics is: CaO15%, SiO 2 50%, Al 2 o 3 12%, MgO10%, K 2 O3%, ZnO3%, TiO 2 5%, other components in blast furnace slag are ignored.

[0031] (2) The test results of the chemical composition of the blast furnace slag from the previous heat were CaO40.57%, SiO 2 34.15%, Al 2 o 3 15.88%, MgO7.88%, K 2 O0.57%, TiO 2 0.95%, the test result of this composition represents the chemical composition of the liquid blast furnace slag used this time. The liquid blast furnace slag used in the implementation of this example is 370g. After calculation, the required amounts of various auxiliary materials are: SiO 2 374g, Al 2 o 3 61g, MgO71g, K 2 O27g, TiO 2 46g, ZnO30g, these auxiliary materials are mixed, and together with the liquid blast furnace slag, they are quickly inserted into the constant temperature graphite crucible in batches. The graphite ...

Embodiment 2

[0035] (1) The amount of blast furnace slag is designed to be 61.6%, and the target composition (wt.%) of blast furnace slag glass ceramics is: CaO25%, SiO 2 40%, Al 2 o 3 12%, MgO10%, K 2 O3%, ZnO3%, TiO 2 5%, other components in blast furnace slag are ignored.

[0036] (2) The test results of the chemical composition of the blast furnace slag from the previous heat were CaO40.57%, SiO 2 34.15%, Al 2 o 3 15.88%, MgO7.88%, K 2 O0.57%, TiO 2 0.95%, the test result of this composition represents the chemical composition of the liquid blast furnace slag used this time. The amount of liquid blast furnace slag used in the implementation of this example is 616g. After calculation, the required amounts of various auxiliary materials are: SiO 2 190g, Al 2 o 3 22g, MgO52g, K 2 O26g, TiO 2 44 g, ZnO30g, mix these auxiliary materials, and quickly insert them into the constant temperature graphite crucible in batches together with the liquid blast furnace slag. The graphite ...

Embodiment 3

[0040] (1) The amount of blast furnace slag is designed to be 37%, and the target composition (wt.%) of blast furnace slag glass ceramics is: CaO15%, SiO 2 50%, Al 2 o 3 12%, MgO10%, K 2 O3%, ZnO3%, TiO 2 5%, other components in blast furnace slag are ignored.

[0041] (2) The test results of the chemical composition of the blast furnace slag from the previous heat were CaO40.57%, SiO 2 34.15%, Al 2 o 3 15.88%, MgO7.88%, K 2 O0.57%, TiO 2 0.95%, the test result of this composition represents the chemical composition of the liquid blast furnace slag used this time. The liquid blast furnace slag used in the implementation of this example is 370g. After calculation, the required amounts of various auxiliary materials are: SiO 2 374g, Al 2 o 3 61g, MgO71g, K 2 O27g, TiO 2 46g, ZnO30g, these auxiliary materials are mixed, and together with the liquid blast furnace slag, they are quickly inserted into the constant temperature graphite crucible in batches. The graphite ...

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Abstract

The invention relates to a method for one-step forming of a microcrystal glass plate through molten-state blast furnace slag. According to the method, the molten-state blast furnace slag and a commercial chemical reagent serve as raw materials, wherein the dosage of the blast furnace slag is 35-70%, and blast furnace slag microcrystal glass is prepared from, by weight, 10-30% of CaO, 35-60% of SiO2, 10-15% of Al2O3, 8-12% of MgO, 2-5% of K2O, 3-4% of ZnO and 3-6% of TiO2; component homogenization of all the materials is completed in a constant-temperature kiln, then the materials are poured into a die, solidification, nucleation, growing and cooling are completed in the die at one step, and finally the microcrystal glass plate is obtained through die release. According to the method, primary sensible heat of the molten-state blast furnace slag is sufficiently and efficiently used, energy waste is avoided, a proper preparing technological process and proper microcrystal glass chemical components are proposed, the preparing steps are simple, cost is low, and a cycle is short.

Description

technical field [0001] The invention relates to the technical field of metallurgical energy recovery and high value-added utilization of solid waste, in particular to a method for forming a glass-ceramic plate in one step by using molten blast furnace slag. Background technique [0002] Using fly ash, metallurgical dust, waste glass, metallurgical slag and other solid wastes to make glass-ceramics through proper composition adjustment has been extensively studied. Usually, the types of waste used are different, and the main crystal phases of the obtained glass-ceramics are also different, and thus their physical, chemical and mechanical properties are also very different. [0003] The main components of blast furnace slag are oxides such as calcium oxide, silicon dioxide, aluminum oxide and magnesium oxide, which are good raw materials for making glass-ceramics. As early as the 1960s, the British Iron and Steel Research Association began to try to prepare blast furnace slag...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C03C10/14C03B19/02
CPCC03B19/02C03C10/0063
Inventor 宋春燕贵永亮王书桓谢春帅秦荣环
Owner NORTH CHINA UNIVERSITY OF SCIENCE AND TECHNOLOGY
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