US 11,964,902 B2
Method for preparing lead smelting slag glass-ceramics based on the oxidation of silicon-rich silicon smelting slag and composition adjustment
Yufeng Wu, Beijing (CN); Xiaomin Liu, Beijing (CN); and Dean Pan, Beijing (CN)
Assigned to BEIJING UNIVERSITY OF TECHNOLOGY, Beijing (CN)
Filed by BEIJING UNIVERSITY OF TECHNOLOGY, Beijing (CN)
Filed on Nov. 14, 2023, as Appl. No. 18/389,556.
Application 18/389,556 is a continuation of application No. PCT/CN2021/138156, filed on Dec. 15, 2021.
Claims priority of application No. 202110723959.8 (CN), filed on Jun. 29, 2021.
Prior Publication US 2024/0076229 A1, Mar. 7, 2024
Int. Cl. C03B 1/00 (2006.01); C03B 19/06 (2006.01); C03B 19/10 (2006.01); C03C 1/00 (2006.01); C03C 10/00 (2006.01)
CPC C03C 10/0063 (2013.01) [C03B 1/00 (2013.01); C03B 19/063 (2013.01); C03B 19/1045 (2013.01); C03C 1/002 (2013.01)] 3 Claims
OG exemplary drawing
 
1. A method for preparing lead smelting slag glass-ceramics based on the oxidation of silicon-rich silicon smelting slag and composition adjustment, characterized in that raw material includes 35-55% lead slag and 45-65% oxidation tempering raw material, and the sum of mass percentages of the lead slag and the oxidation tempering raw material is 100%;
the oxidizing tempering raw material includes silicon slag, oxidant, flux and clarifier; the lead slag includes SiO2, CaO, Fe2O3, Al2O3, ZnO and MgO; the silicon slag includes SiO2, CaO, Al2O3, Na2O, KO, MgO and ZnO;
in the silicon slag, the weight ratio between SiO2, CaO, Al2O3, Na2O, K2O, MgO and ZnO is 65-72:12-18:8-12:0.6-2:0.4-1:0.2-1:0.1-1; silicon element in the silicon slag exists in the form of elemental silicon, silicon carbide and calcium yellow feldspar, and a weight ratio of elemental silicon, silicon carbide and calcium yellow feldspar is 15-30:30-60:5-10;
a weight ratio of SiO2, CaO, Fe2O3, Al2O3, ZnO and MgO in the lead slag is 32-36:10-20:20-30:5-10:2-6:1-4.