Method for extracting scandium from nickel laterite ores

The invention provides a method for extracting scandium from nickel laterite ores. The method includes carrying out leaching treatment on the nickel laterite ores by the aid of sulfuric acid to obtain leach liquor of the nickel laterite ores; carrying out scandium-rich precipitation treatment on the leach liquor of the nickel laterite ores by the aid of first precipitants to obtain scandium-rich precipitates; carrying out two-stage counter-current leaching treatment on the scandium-rich precipitates; carrying out scandium extraction enrichment treatment on first-stage leach liquor by the aid of first organic extracting agents to obtain organic phases with the scandium and raffinate; carrying out back-extraction treatment on the organic phases with the scandium by the aid of hydrochloric acid; carrying out extraction purification treatment on water phases with the scandium by the aid of second organic extracting agents and obtaining purified water phases with the scandium; mixing the purified water phases with the scandium and second precipitants with one another to obtain precipitation with the scandium; calcining the precipitation with the scandium to obtain scandium oxide. The first-stage leach liquor is obtained by means of two-stage counter-current leaching treatment. The water phases with the scandium are obtained by means of back-extraction treatment. The method has the advantage that the recovery rate can be effectively increased when the scandium is extracted from the nickel laterite ores by the aid of the method.