[采矿业] [2024-04-07]
[采矿业] [2024-04-07]
[采矿业] [2024-04-07]
[石油加工、炼焦和核燃料加工业,采矿业] [2024-03-31]
Carbon black is produced by the thermal decomposition method or the partial combustion method using hydrocarbons such as oil or natural gas as a raw material. Carbon black is available as powder or beads. Depending on the manufacturing process, carbon black's characteristics vary; hence, carbon black is classified by manufacturing process. Different processes used for manufacturing carbon black are the furnace black process, channel process, acetylene black process, lampblack process, etc. The furnace black process is the most common method used for carbon black manufacturing.
[采矿业] [2024-03-26]
[采矿业] [2024-03-26]
为提高铁路工程岩石试验水平,经广泛调查研究,认真总结实践经验,参照有关国家标准及行业标准,在广泛征求意见的基础上,对《铁路工程岩石试验规程》(TB 10115- 98)进行了全面修订。
[采矿业] [2024-03-20]
[采矿业] [2024-03-20]
[采矿业] [2024-03-20]
印度能源结构和煤炭资源情况：煤炭占能源主体地位（2020 年占比约 44%），煤炭资源量位列全球第五，但焦煤资源尤其是优质主焦煤资源严重不足。煤炭、石油、生物质为印度的主要能源来源，2000 年以来煤炭作为主体能源地位得到强化，煤炭占印度一次能源比重从 2000 年的 33% 提升至 2020 年的 44%。印 度煤炭资源量位列全球第五，总储量 1111 亿吨，储产比达 147 年。
[采矿业] [2024-03-19]
027-87841330