Method for preparing high-strength foaming ceramic materials from pulverized coal ash

• Main Authors: HAN JIANXIN, MA MINGLONG, BAN SHAOPU, YANG HE, XUE XIANGXIN
• Format: Patent
• Language: Chinese; English
• Published: 07.09.2018
• Subjects: ARTIFICIAL STONE; CEMENTS; CERAMICS; CHEMISTRY; CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION ORPROCESSING OF GOODS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDINGMATERIALS; CONCRETE; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; LIME, MAGNESIA; METALLURGY; REFRACTORIES; SLAG; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS; TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINSTCLIMATE CHANGE; TREATMENT OF NATURAL STONE

The invention relates to a method for preparing high-strength foaming ceramic materials from pulverized coal ash. The method comprises the following steps of (1) preparing and using pulverized coal ash and clay as raw materials, and preparing magnesium oxide, sodium carbonate, calcium carbonate and sodium metaphosphate as additives; (2) performing wet milling on all the raw materials and all the additives by a ball mill to obtain material starch; (3) performing spraying granulating; (4) stuffing processed granules in a mold, performing baking, performing foaming and performing pore forming; and (5) performing cooling in a furnace to room temperature. The method disclosed by the invention is succinct in preparation technology; the resource utilization of the pulverized coal ash is realized;and the obtained products are high in value, high in product strength, good in heat-shielding performance, good in fireproof performance, low in volume density and excellent in property. 种利用粉煤灰制备高强度发泡陶瓷材料的方法，按以下步骤进行：(1)准备粉煤灰