Method for extracting rubidium salt from soil

The invention provides a method for extracting rubidium salt from soil. The method fills the blank of extracting the rubidium salt from the soil at home and abroad in the field and has trans-age significance; and compared with the manner of extracting the rubidium salt from ore, soil exploiting is more convenient and faster than ore exploiting and using, the production cost is lower, the pollution is low, and good popularization value is achieved. The method specifically comprises the following steps of S1, crushing the soil to form soil particles; S2, uniformly mixing the soil particles with a displacer in proportion; S3, enabling the mixture obtained in the S2 to be subjected to rubidium salt reduction treatment to obtain a rubidium salt reduzate; S4, enabling the rubidium salt reduzate to be subjected to liquid immersion treatment; S5, filtering a solution in the step S4 to obtain a rubidium salt solution; and S6, extracting the rubidium salt solution to obtain the solid rubidium salt. 本发明提供了一种土壤中提取铷盐的方法，填