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Quartz sand for fracturing and preparation method thereof
The invention relates to quartz sand for fracturing and a preparation method thereof.The quartz sand for fracturing comprises quartz sand aggregate and a coating layer coating the outer surface of the quartz sand aggregate, and the coating layer is prepared from fly ash, coal gangue, clay, kaolin, silica powder, a silane coupling agent and metal mineral powder; the raw materials comprise, by weight, 60-80 parts of the quartz sand aggregate, 5-10 parts of the fly ash, 5-10 parts of the coal gangue, 5-10 parts of the clay, 5-10 parts of the kaolin, 10-15 parts of the silica powder, 6-10 parts of the silane coupling agent, and 10-15 parts of the metal mineral powder. The preparation method of the quartz sand for fracturing comprises the four steps of preparation of quartz sand aggregate, preparation of coating layer raw materials, film covering and sintering. The surface of the quartz sand aggregate is coated with the coating layer, so that the strength of the quartz sand is improved, the crushing resistance of the quartz sand is improved, the quartz sand has excellent comprehensive performance, the use requirement is met, and the preparation method is simple and convenient to popularize and apply.
本发明涉及压裂用石英砂及其制备方法，该压裂用石英砂包括石英砂骨料以及包覆在石英砂骨料外表的包覆层，包覆层由以下原料组成：粉煤灰、煤矸石、黏土、高岭土、硅微粉、硅烷偶联剂、金属矿粉；上述各个原料的重量份数为：石英砂骨料60‑80份、粉煤灰5‑10份、煤矸石5‑10份、黏土5‑10份、高岭土5‑10份、硅微粉10‑15份、硅烷偶联剂6‑10份、金属矿粉10‑15份。该压裂用石英砂的制备方法包括石英砂骨料的制备、包覆层原料的制备、覆膜、烧结四个步骤。本发明通过在石英砂骨料表面包覆包覆层，增大石英砂的强度，提升其抗破碎性能，具有优良的综合性能，满足使用需求，且本发明制备方法简单，便于推广应用。
Quartz sand for fracturing and preparation method thereof
The invention relates to quartz sand for fracturing and a preparation method thereof.The quartz sand for fracturing comprises quartz sand aggregate and a coating layer coating the outer surface of the quartz sand aggregate, and the coating layer is prepared from fly ash, coal gangue, clay, kaolin, silica powder, a silane coupling agent and metal mineral powder; the raw materials comprise, by weight, 60-80 parts of the quartz sand aggregate, 5-10 parts of the fly ash, 5-10 parts of the coal gangue, 5-10 parts of the clay, 5-10 parts of the kaolin, 10-15 parts of the silica powder, 6-10 parts of the silane coupling agent, and 10-15 parts of the metal mineral powder. The preparation method of the quartz sand for fracturing comprises the four steps of preparation of quartz sand aggregate, preparation of coating layer raw materials, film covering and sintering. The surface of the quartz sand aggregate is coated with the coating layer, so that the strength of the quartz sand is improved, the crushing resistance of the quartz sand is improved, the quartz sand has excellent comprehensive performance, the use requirement is met, and the preparation method is simple and convenient to popularize and apply.
本发明涉及压裂用石英砂及其制备方法，该压裂用石英砂包括石英砂骨料以及包覆在石英砂骨料外表的包覆层，包覆层由以下原料组成：粉煤灰、煤矸石、黏土、高岭土、硅微粉、硅烷偶联剂、金属矿粉；上述各个原料的重量份数为：石英砂骨料60‑80份、粉煤灰5‑10份、煤矸石5‑10份、黏土5‑10份、高岭土5‑10份、硅微粉10‑15份、硅烷偶联剂6‑10份、金属矿粉10‑15份。该压裂用石英砂的制备方法包括石英砂骨料的制备、包覆层原料的制备、覆膜、烧结四个步骤。本发明通过在石英砂骨料表面包覆包覆层，增大石英砂的强度，提升其抗破碎性能，具有优良的综合性能，满足使用需求，且本发明制备方法简单，便于推广应用。
Quartz sand for fracturing and preparation method thereof
一种压裂用石英砂及其制备方法
CHEN HOUFA (author) / LI HONGQI (author) / FAN SONGCAI (author) / ZHOU HAO (author) / XING JING (author) / GENG WEN (author) / HAO HUAN (author) / GUO XIAONING (author)
2021-06-01
Patent
Electronic Resource
Chinese
IPC:
C04B
Kalk
,
LIME
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