在升温条件下进行了不同性质的煤制成的铁矿—煤压块反应实验。结果表明 :反应初期主要是挥发分的析出 ,在还原过程中 ,铁矿—无烟煤压块中挥发分先将铁氧化物还原至 Fe O,然后碳将 Fe O还原到 Fe。铁矿—烟煤压块中挥发分和碳能够连续...在升温条件下进行了不同性质的煤制成的铁矿—煤压块反应实验。结果表明 :反应初期主要是挥发分的析出 ,在还原过程中 ,铁矿—无烟煤压块中挥发分先将铁氧化物还原至 Fe O,然后碳将 Fe O还原到 Fe。铁矿—烟煤压块中挥发分和碳能够连续将铁氧化物还原到 Fe,无烟煤和烟煤混合制成的铁矿—混合煤压块中先是烟煤中的碳将铁氧化物部分还原至 Fe,然后无烟煤中的碳将剩余的 Fe O还原到展开更多
The paper analyses the stress characteristics in longwall face and its interaction with impact coal cutting, and puts forward the operation method for impact coal cotting. Similar material to the coal in particular mi...The paper analyses the stress characteristics in longwall face and its interaction with impact coal cutting, and puts forward the operation method for impact coal cotting. Similar material to the coal in particular mine was used to simulate the coal mass. Impact coal breaking test was performed on the test rig. The traveling pattern of the impact stress wave in coal and the dynamic response of impact parameters on coal property is analyzed.展开更多
文摘在升温条件下进行了不同性质的煤制成的铁矿—煤压块反应实验。结果表明 :反应初期主要是挥发分的析出 ,在还原过程中 ,铁矿—无烟煤压块中挥发分先将铁氧化物还原至 Fe O,然后碳将 Fe O还原到 Fe。铁矿—烟煤压块中挥发分和碳能够连续将铁氧化物还原到 Fe,无烟煤和烟煤混合制成的铁矿—混合煤压块中先是烟煤中的碳将铁氧化物部分还原至 Fe,然后无烟煤中的碳将剩余的 Fe O还原到
文摘The paper analyses the stress characteristics in longwall face and its interaction with impact coal cutting, and puts forward the operation method for impact coal cotting. Similar material to the coal in particular mine was used to simulate the coal mass. Impact coal breaking test was performed on the test rig. The traveling pattern of the impact stress wave in coal and the dynamic response of impact parameters on coal property is analyzed.