Method for preparing composite mineral admixture from water-quenched converter slag

• Main Authors: HUANG MINRONG, XIE WENYAN, LIANG GUOAN, LI JIANRONG, LIANG KUNYUE, LIU XIANGDONG, LIN GUOLANG, JU YOUNG-SEOK, CHEN KANGMEN
• Format: Patent
• Language: Chinese; English
• Published: 25.04.2023
• Subjects: ACYCLIC OR CARBOCYCLIC COMPOUNDS; ARTIFICIAL STONE; CEMENTS; CERAMICS; CHEMISTRY; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDINGMATERIALS; COMPOUNDS CONTAINING METALS NOT COVERED BY SUBCLASSESC01D OR C01F; COMPOUNDS OF ALKALI METALS, i.e. LITHIUM, SODIUM, POTASSIUM,RUBIDIUM, CAESIUM, OR FRANCIUM; COMPOUNDS OF THE METALS BERYLLIUM, MAGNESIUM, ALUMINIUM,CALCIUM, STRONTIUM, BARIUM, RADIUM, THORIUM, OR OF THERARE-EARTH METALS; CONCRETE; INORGANIC CHEMISTRY; LIME, MAGNESIA; MANUFACTURE OF IRON OR STEEL; METALLURGY; METALLURGY OF IRON; ORGANIC CHEMISTRY; REFRACTORIES; SLAG; TREATMENT OF NATURAL STONE

The invention discloses a method for preparing a composite mineral admixture from water-quenched converter slag, which comprises the following process steps: preparation of water-quenched converter slag and granulated blast furnace slag, preparation of sodium hydroxide, preparation of desulfurized gypsum, preparation of calcium citrate, preparation of a cement additive, and preparation of magnesium sulfate and ferric hydroxide. The preparation method comprises the following steps: proportionally grinding, homogenizing and mixing water-quenched converter slag, granulated blast-furnace slag, desulfurized gypsum, a cement additive, silica fume, fly ash, manganese alloy slag, cement clinker, limestone mining debris and a composite chemical strength exciting agent; the specific surface area and the activity index are effectively improved by utilizing the activity index increase of the granulated blast furnace slag, the excitation effect of the desulfurized gypsum and the grinding aiding effect and the chemical exc