Method for separating quartz from low-grade potassium and sodium feldspar ore

Abstract

The invention provides a method for separating quartz from low-grade potassium and sodium feldspar ore. The method comprises the steps of providing low-grade potassium and sodium feldspar ore powder; mixing the low-grade potassium and sodium feldspar ore powder and water for obtaining low-grade potassium and sodium feldspar ore slurry; adjusting the pH value of the low-grade potassium and sodium feldspar ore slurry to 8-10 through conditioning agents, and then carrying out roughing, scavenging, concentrating and drying on the low-grade potassium and sodium feldspar ore slurry for obtaining fine potassium and sodium feldspar powder and floating the quartz; adding activating agents, inhibitors and amine collecting agents in the roughing process and the scavenging process each time. The method has the advantages that the production cost is low, the requirement for corrosion prevention of equipment is low, pollution to the environment is small, and the quality of the obtained fine potassium and sodium feldspar powder meets the use standard GB/T9195-1999 of the ceramic industry.

Description

technical field [0001] The invention relates to the technical field of flotation separation of minerals, in particular to a method for separating quartz from low-grade potassium albite ore. Background technique [0002] There are many feldspar resources in our country, and the distribution is also very wide. However, a large part of feldspar ore contains more impurities and is not of high quality. Under the background of the rapid growth of demand for feldspar, it is imminent to purify feldspar powder from low-quality feldspar mines. At present, the purification of potassium and sodium feldspar fine powder from low-quality potassium and sodium feldspar mainly uses gravity separation, electric separation, magnetic separation, flotation and other beneficiation methods for combined separation operations, so as to achieve the removal of iron in potassium and sodium feldspar ore. , titanium, quartz, mica and other associated gangue minerals, to achieve the purpose of recovering ...

AI Technical Summary

Problems solved by technology

Due to the large content of feldspar and low quartz content in potassium sodium feldspar, the positive flotation should "float more and suppress less", so the foaming agent No. 2 oil used in the forward flotation process under acidic conditions needs 40-60g / ton, The activator sodium petroleum sulfonate needs 600-1000g / t, and the collector dodecylamine needs 300-600g / t. The consumption of each flotation agent is relatively large, resulting in high production costs and restricting the development of the industry.

On the other hand, a large amount of sodium petroleum sulfonate will also cause the appearance of feldspar fine powder to turn gray, which will affect the appearance of the product and cause pollution to the environment when feldspar fine powder is produced at high temperature in the later stage.