Method for preparing microcrystalline glass from ferrochrome slag
A technology of chromium-iron alloy and glass-ceramics, which is applied in the field of glass-ceramics preparation, can solve the problems of strong volume crystallization ability and difficult sintering, and achieve the effects of improved flexural strength, easy mechanization, and high absorption rate
Pending Publication Date: 2021-08-03
INNER MONGOLIA UNIV OF SCI & TECH
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Problems solved by technology
The method provided by the invention adopts the heat treatment method of first sintering and then crystallization, which solves the problem that the volume crystallization ability is too strong in the process of preparing glass-ceramics by the sintering method of ferrochrome alloy slag, and the problem that it is difficult to sinter and form is easy to control the production process of glass-ceramics. Easy to implement mechanization and automation
Method used
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Embodiment
[0036] 1. Crush chrome alloles and quartz sands, over 200 mesh screen, produce chromium-free metal slag powder and quartz sand powder.
[0037]2, according to the ratio of the mass of the mass in Table 1, chrome iron alloy slag powder and quartz sand powder are accurately weighed, mixed with 3 h in the mixer, resulting in a mixed raw material, weighing 400 g of mixing feedstock to load the corundum jade crucible, placed in a silicon-molybdenum rod electric furnace, The temperature was raised to 1500 ° C, molten 3 h, formed in a uniform glass solution, and extracting the crucible into the cooling water of the room temperature, performing water quenching, and prepared the base glass 1 # -6 #;
[0038] 3. Put the basal glass 1 # -6 # after the quenching, screen, dry, polish into powder, each take a small amount of differential analysis, the differential heat analysis (DSC) curve is respectively Figure 1 - Figure 3 The crystallization temperature of the microcrystalline glass was crys...
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The invention discloses a method for preparing microcrystalline glass from ferrochrome slag, and relates to the technical field of microcrystalline glass preparation. The method comprises the following steps: S1, respectively drying, crushing and sieving ferrochrome slag and quartz sand to prepare ferrochrome slag powder and quartz sand powder; S2, mixing the ferrochrome slag powder and the quartz sand powder, putting the mixture into a high-temperature atmosphere furnace, conducting heating, conducting warming and preserving heat to prepare uniform molten glass, and carrying out water quenching to prepare water-quenched base glass; S3, crushing, screening, drying and grinding the basic glass subjected to water quenching into powder, and carrying out DSC test to measure the crystallization temperature; and S4, grinding the water-quenched base glass into powder, conducting sieving, conducting pressing to obtain a rectangular sample, conducting sintering, preserving heat, conducting cooling to crystallization temperature, preserving heat for the second time, and conducting cooling to obtain the microcrystalline glass.
Description
Technical field [0001] The present invention relates to the technical field of microcrystalline glass preparation, and more particularly to a method of preparing a microcrystalline glass using chromium metal. Background technique [0002] Chromium alloy is the most important raw material for stainless steel, and the amount of stainless steel is generally not less than 12%. And every 1 T chrome iron alloy will produce a waste residue 1 to 1.2t. With the development of stainless steel industries, the number of chrometerankums will continue to increase, not only to occupy cultivated land, but also waste land resources, but also cause environmental pollution. [0003] Chromium in chromium ferroallosus belongs to heavy metal elements, and it is prone to valence, and heavy metal chromium is usually present in two states of trivalent and six or six, of which trivalent chromium is non-toxic, and is one of the trace elements required by the human body; The valence has strong oxidation, ca...
Claims
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Login to View More IPC IPC(8): C03C10/06C03B32/02
CPCC03C10/0063C03C10/0036C03B32/02
Inventor 王艺慈王瑞鑫罗果萍安胜利柴轶凡彭军
Owner INNER MONGOLIA UNIV OF SCI & TECH