COMPOSITIONS AND METHODS FOR IMPROVED PRECIOUS METAL EXTRACTION FROM ORE

    公开(公告)号:US20230110976A1

    公开(公告)日:2023-04-13

    申请号:US17914321

    申请日:2021-03-25

    申请人: SOLUGEN, INC.

    摘要: A method for precious metal extraction comprises contacting a precious metal-containing ore with an improved cyanide extraction agent under conditions suitable for the formation of a coated precious metal-containing ore where the extraction agent comprises (i) a cement and (ii) a cement retarder; and contacting the coated precious metal-containing ore with a cyanide solution to form soluble precious metal complexes. A composition for gold extraction comprising: (i) a cement (ii) a cement retarder and (iii) an inorganic cyanide salt.

    Two-component mortar system based on aluminous cement and use thereof

    公开(公告)号:US20220098107A1

    公开(公告)日:2022-03-31

    申请号:US17533381

    申请日:2021-11-23

    摘要: A multi-component mortar system contains a curable aqueous-phase aluminous cement component A and an initiator component B in aqueous-phase for initiating the curing process. Component A further contains at least one plasticizer, water, and at least one blocking agent selected from phosphoric acid, metaphosphoric acid, phosphorous acid, and phosphonic acids. Component B contains an initiator, at least one retarder, at least one mineral filler, and water. A multi-component system is useful, which is ready-for-use, for chemical fastening of anchoring means, preferably of metal elements, in mineral surfaces, such as structures made of brickwork, concrete, pervious concrete or natural stone as well as its use for chemical fastening of anchoring means.

    Cementitious Composition With High Bond Strength To Both Asphalt And Cement Based Materials

    公开(公告)号:US20220002202A1

    公开(公告)日:2022-01-06

    申请号:US17476893

    申请日:2021-09-16

    申请人: Paul Sampson

    发明人: Paul Sampson

    摘要: A hydratable cement composition which will bond to both asphalt and cementitious substrates is supplied for the repair of various surfaces. The composition comprises of a combination of Portland cement, calcium sulfoaluminate cement or calcium aluminosilicate, and an alkali metal salt activated pozzolonic powder, wherein the Portland cement content of the hydratable portion of the composition is greater than 20%. The composition is free from latex bonding agents and calcium aluminate. The composition is mixed with water to form a typical cement, mortar, or concrete consistency, placed and allowed to cure. The result is a self-adhering patch to damaged surfaces. The hydratable cement composition may also be used to fabricate items of original construction by casting into molds or forms.