Method for deironing, purifying and sorting kaolin

• Main Authors: PENG HUA, XU SHAOBIN, LUO DAFANG, PENG LIQUN, LIU HAISHEN, DU XUN, DAI CHUAN, LIU RUNZHE, XIAO ZHE, ZHANG CHAOWANG, PANG JIANTAO, LUO KUNYI, LI RUOLAN, DU LEI, LIU LIFEN, YANG JIANGUANG
• Format: Patent
• Language: Chinese; English
• Published: 05.08.2022
• Subjects: OTHER SEPARATING BY DRY METHODS APPLICABLE TO BULK MATERIAL,e.g. LOOSE ARTICLES FIT TO BE HANDLED LIKE BULK MATERIAL; PERFORMING OPERATIONS; POSTAL SORTING; SEPARATING SOLIDS FROM SOLIDS; SEPERATING SOLIDS FROM SOLIDS BY SIEVING, SCREENING, ORSIFTING OR BY USING GAS CURRENTS; SORTING; SORTING INDIVIDUAL ARTICLES, OR BULK MATERIAL FIT TO BE SORTEDPIECE-MEAL, e.g. BY PICKING; TRANSPORTING

The invention discloses an iron removal, purification and separation method for kaolin, and relates to the technical field of nonmetallic mineral separation. After kaolin ore is preliminarily crushed and separated, ore grains with proper grain size are selected and enter photoelectric separation equipment, the photoelectric separation equipment separates the ore grains according to a preset selection curve, the ore grains meeting the concentrate requirement are purged to a concentrate product box, and tailings enter a tailings box. The content of Fe2O3 in kaolin ore is obviously reduced and the content of Al2O3 is improved through simple photoelectric separation treatment under the dry condition, concentrate meeting the follow-up processing quality is obtained, the iron removal, purification and separation process is simple, the production cost is greatly reduced, low-grade kaolin is recycled after separation, the resource utilization rate is increased, and the method is suitable for industrial production. Th