一次烧成砖产量的下降 ,使低质量长石的市场萎缩。因此 ,长石生产企业面临提高产品质量和增加产品利润方面难题。论文叙述了提高目前正以微利销售的原料或作为废料的产品价值问题。研究了 3个不同范例。试验研究结果表明 ,采用磁选、表面擦洗和选择性浮选选矿技术可以获得附加值较高更易于销售的精矿。处理流程通常是上述选矿方法的组合 ,最终产品的质量要求越高 ,工艺流程就越复杂 ,处理成本越高。 A decline in the production of fired bricks, low-quality feldspar market shrinking. Therefore, feldspar manufacturers face the problems of improving product quality and increasing product profitability. The paper describes the issue of increasing the value of products that are currently being sold at a marginal profit or as waste. Three different examples were studied. The experimental results show that the use of magnetic separation, surface scrubbing and selective flotation beneficiation technology can be obtained with higher value and more easy to sell concentrate. The processing flow is usually a combination of the above beneficiation methods, the higher the quality requirements of the final product, the more complicated the process and the higher the processing cost.