Method and device for preparing yellow phosphorus raw material from low-grade ground phosphate rock

The invention relates to the technical field of phosphorus chemical industry and environmental protection, in particular to a method and device for preparing yellow phosphorus from low-grade ground phosphate rock and a preparation method of yellow phosphorus. The method comprises the following steps: removing phosphides generated in the combustion process of yellow phosphorus tail gas by using low-grade ground phosphate rock as a dephosphorizing agent, and mixing and molding the obtained high-grade ground phosphate rock and a binder to obtain a yellow phosphorus raw material. According to the method, the low-grade phosphate rock powder is used as a dephosphorization agent, and the yellow phosphorus tail gas and a specific process are combined, so that the resource high-efficiency utilization of the low-grade phosphate rock powder can be realized, the purification of phosphide in the yellow phosphorus tail gas can be realized, the corrosion of a gas-fired boiler is avoided, and the economic benefit is relative