Method for improving solid-liquid separation efficiency of hydrochloric acid leaching ore pulp of superior monazite slag

• Main Authors: LIU HUIWU, WANG GUISHUO, CHENG HAO, LIU KANG, ZHANG CHENGTIAN, LIU ZHONGCHEN, XIANG QIULIN, SU XUEBIN, LIANG GENGYU
• Format: Patent
• Language: Chinese; English
• Published: 30.05.2023
• Subjects: CHEMISTRY; FERROUS OR NON-FERROUS ALLOYS; METALLURGY; PRETREATMENT OF RAW MATERIALS; PRODUCTION AND REFINING OF METALS; TREATMENT OF ALLOYS OR NON-FERROUS METALS

The invention provides a method for improving the solid-liquid separation efficiency of hydrochloric acid leaching ore pulp of superior monazite dissolving slag, and belongs to the technical field of hydrometallurgy. A high-molecular polymer is adopted as a filter aid and is directly added into the ore pulp after leaching the monazite excellent slag with hydrochloric acid, and the solid-liquid separation efficiency of the ore pulp is improved by improving the filtering performance of the ore pulp; and the filter aid and the ore pulp can be pumped into a filter press for solid-liquid separation treatment after being mixed, and the ore pulp filtering speed can be easily increased to more than 100L/(m < 2 >. H). The added filter aid has no side effect, does not generate extra precipitate, does not influence separation and recovery of valuable elements in the leachate, has no aging waiting time, is simple and continuous in process operation, effectively reduces equipment investment and energy and power consumptio