陕西煤炭2025，Vol.44Issue(3)：154-158,5.DOI:10.20120/j.cnki.issn.1671-749x.2025.0328
王村煤场选煤厂风选改造工艺研究与实践
Research and practice of transformation process for air separation of Wangcun coal preparation plant
张义 1史培宁1
作者信息
- 1. 中煤西安设计工程有限责任公司,陕西 西安 710054
- 折叠
摘要
Abstract
Raw coal in Wangcun preparation plant has obvious characteristics such as high ash content,fine particle size and high moisture content.The existing air separation system is closed because of its low adaptability and low efficiency.In order to resume the separation system and improve the calorific value of products,we analyze the coal quality of raw coal,and study the process of depowder and middle coal separation process.50-3 mm main re-separation process without 3 mm pow-der coal was finally adopted.Combined with the existing production facilities,the combined cross screen with relaxation screen is adopted to ensure the flexible and adjustable particle size of powder removal,with the open-circuit re-separation of middle coal to improve its capacity and separation accuracy.The practical production results show that the yield of clean coal is equivalent to that before transformation,the calorific value of the product is increased from 4 208 kcal/kg to 4 517 kcal/kg,and profit increases to 33.56 million yuan.The adaptability of the system to raw coal is significantly en-hanced,and the transformation process conforms to raw coal,and expected effect is achieved.关键词
干法风选/中煤/主再选/脱粉Key words
dry air separation/middling coal/main re-separation/removal of powdered coal分类
矿业与冶金引用本文复制引用
张义,史培宁..王村煤场选煤厂风选改造工艺研究与实践[J].陕西煤炭,2025,44(3):154-158,5.
