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Manufacturing method of metallurgical solid waste steel slag cement
The invention relates to a method for preparing cement from metallurgical solid waste steel slag. The metallurgical solid waste steel slag is immersed into a certain amount of water (or other liquid),put into a pressure container, heated and pressurized, and subjected to heat preservation and pressure maintaining for a certain period of time, so that the water (or other liquid) is immersed into dicalcium silicate and tricalcium silicate dense crystals in the steel slag, the pressure container is instantly opened to release pressure, and the air pressure is rapidly reduced. Due to the fact that water is soaked into overburnt dicalcium silicate and tricalcium silicate in the steel slag, water molecules are rapidly vaporized and expanded under the huge pressure difference, the crystallization density of dicalcium silicate and tricalcium silicate is reduced, the specific surface area is increased, the hydration speed of overburnt dicalcium silicate, tricalcium silicate and other substances is increased, and the early hardness of steel slag cement is improved. Free calcium oxide and magnesium oxide are completely reacted into calcium carbonate through pressurization release of carbon dioxide and a catalyst. Stable components of magnesium carbonate avoid later magnesium oxide of the steel slag cement. And the expansion of calcium oxide is unstable. And a great amount of magnetically-separable iron alloy powder is reduced.
本发明涉及一种冶金固废钢渣制备水泥的方法。冶金固废钢渣浸入一定量水(或其他液体)，放入压力容中，加温加压，保温保压一定时间，使水(或其他液体)浸入钢渣中的硅酸二钙、硅酸三钙质密晶体中，瞬间打开压力容器释放压力，使气压迅速下降。由于水浸到钢渣中过烧的硅酸二钙和硅酸三钙的内部，在巨大压差下水分子迅速汽化膨胀，使硅酸二钙、硅酸三钙结晶密度减小，比表面积增大，加快过烧硅酸二钙、硅酸三钙的等物质水化速度，提高钢渣水泥的早期硬度。通过二氧化碳及催化剂加压释放，使游离的氧化钙，氧化镁完全反应成碳酸钙。碳酸镁的稳定成份，避免钢渣水泥后期氧化镁。氧化钙的膨胀不稳定因素。还原出极多的可磁选铁合金粉。
Manufacturing method of metallurgical solid waste steel slag cement
The invention relates to a method for preparing cement from metallurgical solid waste steel slag. The metallurgical solid waste steel slag is immersed into a certain amount of water (or other liquid),put into a pressure container, heated and pressurized, and subjected to heat preservation and pressure maintaining for a certain period of time, so that the water (or other liquid) is immersed into dicalcium silicate and tricalcium silicate dense crystals in the steel slag, the pressure container is instantly opened to release pressure, and the air pressure is rapidly reduced. Due to the fact that water is soaked into overburnt dicalcium silicate and tricalcium silicate in the steel slag, water molecules are rapidly vaporized and expanded under the huge pressure difference, the crystallization density of dicalcium silicate and tricalcium silicate is reduced, the specific surface area is increased, the hydration speed of overburnt dicalcium silicate, tricalcium silicate and other substances is increased, and the early hardness of steel slag cement is improved. Free calcium oxide and magnesium oxide are completely reacted into calcium carbonate through pressurization release of carbon dioxide and a catalyst. Stable components of magnesium carbonate avoid later magnesium oxide of the steel slag cement. And the expansion of calcium oxide is unstable. And a great amount of magnetically-separable iron alloy powder is reduced.
本发明涉及一种冶金固废钢渣制备水泥的方法。冶金固废钢渣浸入一定量水(或其他液体)，放入压力容中，加温加压，保温保压一定时间，使水(或其他液体)浸入钢渣中的硅酸二钙、硅酸三钙质密晶体中，瞬间打开压力容器释放压力，使气压迅速下降。由于水浸到钢渣中过烧的硅酸二钙和硅酸三钙的内部，在巨大压差下水分子迅速汽化膨胀，使硅酸二钙、硅酸三钙结晶密度减小，比表面积增大，加快过烧硅酸二钙、硅酸三钙的等物质水化速度，提高钢渣水泥的早期硬度。通过二氧化碳及催化剂加压释放，使游离的氧化钙，氧化镁完全反应成碳酸钙。碳酸镁的稳定成份，避免钢渣水泥后期氧化镁。氧化钙的膨胀不稳定因素。还原出极多的可磁选铁合金粉。
Manufacturing method of metallurgical solid waste steel slag cement
冶金固废钢渣水泥的制造方法
XI JUNJIE (author) / LAN HAO (author) / ZHANG HUIFENG (author)
2020-07-03
Patent
Electronic Resource
Chinese
IPC:
C04B
Kalk
,
LIME
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