WO 2019/210534 A1

Method for preparing sulphoaluminate cement by using cyanide tailings

(22) 16.05.2018

(43) 07.11.2019

(57) A method for preparing aluminosulfate cement using cyanide tailings, comprising the following steps: (1) preparing cyanide tailings, lime and an aluminum material as raw materials, and adding or not adding a mineralizer to prepare a mixed material; (2) performing high-temperature sintering by means of a high-temperature kiln to obtain sintered clinker; and (3) cooling the same to room temperature by means of a cooling kiln, and performing cement powder grinding treatment to prepare aluminosulfate cement. The method has a good cyanide removal effect and has a cyanide removal rate of 99 % or more. The high-temperature sintered aluminosulfate cement is a high-strength and fast-hardening cement, and can fully meet the required cement amount for capital construction and backfilling of gold ore enterprises.

(71) Northeastern University, Liaoning 110819 (CN)

Related articles:

Issue 2019-7-8 US 2019/0112228 A1

Macro-cement compositions, method of producing macro-cement and engineered forms of macro-cement, and multi-stage homogenization process for preparing cement based materials

(22) 13.12.2018 (43) 18.04.2019 (57) A macro-cement and associated methods useful for preparing pastes, mortars, concretes and other cement-based materials having high workability, high density, and...

more
Issue 2019-9 WO 2019/105109 A1

Dry dedusting dust-free bulk-cement discharging method

(22) 19.09.2018 (43) 06.06.2019 (57) A dry dedusting dust-free bulk-cement discharging method, comprising steps of: Si, construct a dry dedusting dust-free bulk-cement discharging system which...

more
CA3032137 (A1)

High temperature resistant Portland cement slurry and production method thereof

(22) 31.01.2019 (43) 02.08.2019 (57) The invention provides a high temperature resistant Portland cement slurry and a production method thereof. The high temperature resistant Portland cement slurry...

more
Issue 2020-3 WO 2019/225202 A1

Treatment method for reducing carbon dioxide discharge amount of combustion exhaust gas

(22) 11.04.2019 (43) 28.11.2019 (57) The present invention pertains to an efficient method for refining sodium carbonate using natural sodium carbonate ore comprising Na2CO3 and NaHCO3, and a method...

more
Issue 2020-3 WO 2019/231229 A1

Method for preparing chemical gypsum having SO3 content of 38?% or greater (weight basis) by preparing alkali neutralizer using industrial byproducts containing steel slag or calcium oxide as major raw materials and neutralizing waste acid by dry method

(22) 29.05.2019 (43) 05.12.2019 (57) The present invention relates to a method for preparing chemical gypsum having a SO3 content of 38?% or greater by preparing an alkali neutralizer using, as major...

more