Special powder for carbon dioxide activator and preparation process thereof
By employing refined processes such as differentiated raw material pretreatment, graded ball milling, stepwise gradient mixing, and vacuum homogenization, the uniformity and stability issues of carbon dioxide activator powder have been resolved, achieving highly safe and efficient powder preparation suitable for complex construction environments.
CN122277348APending Publication Date: 2026-06-26SHANXI ZHONGDE DINGSHENG MASCH MFG CO LTD +1
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- SHANXI ZHONGDE DINGSHENG MASCH MFG CO LTD
- Filing Date
- 2026-03-19
- Publication Date
- 2026-06-26
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Figure SMS_1
Abstract
This invention relates to the field of carbon dioxide fracturing technology, specifically to a special powder for carbon dioxide activators and its large-scale preparation process. The special powder uses potassium perchlorate, salicylic acid, and ammonium oxalate as main raw materials, compounded with trace functional additives. The formula is scientifically controlled, possessing both high exothermic properties and inherent safety. The preparation process includes: pre-treating the raw materials followed by multi-gradient drying, graded ball milling and sieving, pre-mixing, homogenization and mixing, and secondary drying. The special powder prepared by this invention has a component uniformity deviation of ≤1%, a shelf life of up to 24 months at room temperature with sealing, 100% ignition reliability, and is compatible with various carbon dioxide fracturing devices, exhibiting significant safety, environmental, and economic advantages in mining, municipal engineering, and high-gas mines.
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