瘦煤是烟煤的一种,煤化程度较高。挥发物较少,粘结性弱,能单独结焦,属炼焦煤。炼焦过程中能产生相当数量的胶质体,Y值一般在6-10mm左右。 用单种煤炼焦生成的焦炭,熔融性差,易于碎裂,耐磨性小,但块度 大。常用作配煤炼焦的瘦化剂,以减小焦炭的裂纹, 提高焦炭的耐磨性和块度。也用作燃料和气化的原料。
...成份而G≤75的1/3焦煤结焦炭性较差,独个炼焦时不克不及患上到高强度的焦炭,在共同煤中的用量也不宜过多4、 瘦煤 ( lean coal ):中国石炭分类国家尺度中,对于炭化度较高的烟煤的称谓该尺度规定, 瘦煤 的干燥无灰基挥发分Vdaf>10~20%,粘结性指数G>...
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研究结果发现,无烟煤替代瘦煤炼焦会降低焦炭的冷态强度。
Research the result discovers, the anthracite coal ACTS for the thin coal coke and would lower the cold the strength of state of the coke.
对无烟煤配入瘦煤和焦粉,用改性焦油洗油残渣做黏结剂,制备冷压型焦进行了试验研究。
An experiment and research on cold briquetting coke was conducted with anthracite coal blended with lean coal and fine coking coal and with residuum of modified coal tar oil as the binder.
气化工作面扩展速率在供风点附近出现最大值,变化平稳,瘦煤地下气化具有较高的稳定性。
The gasification face development rate of the test coal changes gently in underground gasification process, which indicates that the underground gasification of lean coal has high stability.
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