Low-cost deironing quality-improving beneficiation method for high-impurity-content feldspar quarry

The invention discloses a low-cost deironing quality-improving beneficiation method for high-impurity-content feldspar quarry. Inferior fine magnetite concentrates of low-intensity magnetic separation operation are divided into four fractions through grading operation of three times, and the concentrates of the coarse fraction of grading operation of the first time are directly thrown out as tailings (3). Rough flotation, fine flotation and the high-intensity magnetic separation process are adopted on the concentrates of the rough fraction of grading operation of the second time. The concentrates of the fine fraction of grading operation of the second time are graded through grading of the third time, and rough flotation, fine flotation and the high-intensity magnetic separation process are adopted on the concentrates of the rough fraction of grading operation of the third time. High-intensity magnetic separation operation is directly carried out on the concentrates of the fine fraction of grading operation of the third time to obtain concentrates (3). The grading treatment process is adopted, and products of different qualities and purposes can be obtained according to different purposes. The particle size of products of all fractions after grading is concentrated, few flotation reagents are adopted, and the flotation cost is low. The productivity and ferric oxide recycling rate of grading flotation are high, and all flotation indexes are good. The deironing beneficiation process for feldspar is good in applicability, and can be used for grading various types of feldspar quarry.