公开(公告)号：US11834951B1

公开(公告)日：2023-12-05

申请号：US18074257

申请日：2022-12-02

申请人： Leo Byford

发明人： Leo Byford

IPC分类号： E21F15/08 ,  B09B1/00 ,  E21B41/00 ,  E21F15/00 ,  B09B101/45 ,  B09B101/55

CPC分类号： E21F15/08 ,  B09B1/008 ,  E21B41/005 ,  E21F15/005 ,  B09B2101/45 ,  B09B2101/55

摘要： A method of this disclosure directionally drills at least one well extending from ground surface to an interior of an underground mine located below ground, the well being at an oblique angle relative to vertical; blends or mixes together a hazardous material, like lead, zinc, arsenic, and cadmium with cement including a plasticizer; pumps or flows the mixture into the well, wherein the mixture flows toward a lower end of the mine and hardens in place. The method allows for the permanent placement of contaminated mixtures like chat into mines or shafts or depositories, as defined by the United States Environmental Protection Agency, CERCLA and Superfund laws and complies with rules for the permanent closing of these structures with contaminated material and contaminated substances.

公开(公告)号：US20240351902A1

公开(公告)日：2024-10-24

申请号：US18684820

申请日：2022-08-31

申请人： SUMITOMO OSAKA CEMENT CO., LTD. ,  YAMAGUCHI UNIVERSITY ,  KYUSHU UNIVERSITY, NATIONAL UNIVERSITY CORPORATION

发明人： Sadato KIKUCHI ,  Shogo NAKAMURA ,  Risa OIZUMI ,  Masayoshi KONISHI ,  Mitsuru HIGA ,  Ikuo TANIGUCHI

IPC分类号： C01F11/18 ,  B09B3/70 ,  B09B101/45 ,  C01B7/07 ,  C01D1/38 ,  C01D1/40 ,  C01D7/07

CPC分类号： C01F11/18 ,  B09B3/70 ,  C01B7/07 ,  C01D1/38 ,  C01D1/40 ,  C01D7/07 ,  B09B2101/45 ,  C01P2006/80

摘要： Provided is a calcium carbonate generation method and system in which calcium carbonate having a high purity can be generated using a calcium-containing waste. Provided is a calcium carbonate generation method of generating calcium carbonate from a calcium-containing waste, the calcium carbonate generation method including: a calcium dissolution step of adding aqueous hydrochloric acid to a calcium-containing waste and dissolving calcium to generate an aqueous solution containing a calcium ion; a separation step of adjusting a hydrogen ion concentration index of the aqueous solution containing a calcium ion and separating a component containing at least one selected from the group consisting of Si, Al, Mg, and heavy metal from the aqueous solution; and a calcium carbonate collection step of generating calcium carbonate using an aqueous solution obtained in the separation step and an aqueous solution containing potassium carbonate and/or sodium carbonate.