Method for preparing light-weight heat-insulating refractory castable from residues generated in production of magnesium hydroxide from bischofite

• Main Authors: LI YAWEI, BAO LONGYUN, LI MENGJIE, LIAO NING, LU RONGXIAO, LIU WENJING, HU XINGPENG
• Format: Patent
• Language: Chinese; English
• Published: 21.07.2023
• Subjects: ARTIFICIAL STONE; CEMENTS; CERAMICS; CHEMISTRY; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDINGMATERIALS; CONCRETE; LIME, MAGNESIA; METALLURGY; REFRACTORIES; SLAG; TREATMENT OF NATURAL STONE

The invention discloses a method for preparing a light-weight heat-insulating refractory castable by using residues generated in the production of magnesium hydroxide from bischofite, and relates to a method for preparing a refractory castable by using magnesium hydroxide residues. The invention aims to solve the problems of environmental pollution caused by the existing magnesium hydroxide residues and poor heat insulation effect of the refractory castable. The method comprises the following steps: preparing a radiation energy-saving light-weight CA6-MA aggregate which contains CA6 and transition metal oxide doped magnesium aluminate spinel; the tabular corundum fine powder, the alpha-Al2O3 micro powder, the calcium aluminate cement, the CA6-MA aggregate and the like are mixed and poured into a mold, and demolding and baking are performed after curing. The radiation energy-saving light-weight CA6-MA castable disclosed by the invention adopts the radiation energy-saving light-weight CMA particles, has low the