新疆五彩湾煤制备气化水煤浆的中试试验研究

为提高低阶煤的成浆浓度，以新疆五彩湾煤为原料，采用传统制浆工艺和间断级配制浆工艺进行成浆性试验，并在此基础上开展了中试制浆试验。试验结果表明：传统制浆工艺下，该煤种的最高成浆浓度为51.05%|采用间断级配制浆工艺，在粗细颗粒质量比为6∶4的条件下，该煤种的最高成浆浓度可达57.08%，较传统制浆工艺提高了6个百分点|采用中试制浆工艺，该煤种的最高成浆浓度为56.19%，较传统制浆工艺提高了5个百分点，略低于实验室的间断级配制浆工艺。中试制浆试验有效的验证了实验室的小试结果，且中试设备能够长时间稳定运行。

Pilot-scale experiment study on preparation of gasification coal water slurry from low rank coal

In order to increase the slurry concentration of low rank coal, the coal water slurry for gasification was prepared using low rank coal in Xinjiang as raw material. The slurry experiments were carried out by means of traditional process and gap-graded process, on this basis, the pilot-scale experiment was carried out. The results showed that the highest coal water slurry concentration of the coal was 51.01% under the traditional process. Under the condition of the mass ratio of coarse to fine was 6:4, the highest coal water slurry concentration was up to 57.08% adopting gap-graded process, we found that the slurry concentration 6% higher than the traditional process. While by using pilot-scale experiment, the highest coal water slurry concentration is 56.19%, which was 5% higher than the traditional process, but slightly lower than the gap-graded process in the laboratory. The results of pilot-scale experiment effectively verified the results of the laboratory's small-scale test, and the pilot-scale equipment can run stably for a long time.