Patent ID: 11919826
Assignee: XI'AN UNIVERSITY OF ARCHITECTURE AND TECHNOLOGY
Field: Materials, metallurgy (Chemistry)
Classification: CPC C  Y | IPC C

Claim 0:
1. A method for enhancing compressive strength of a lead smelting water-quenched slag-based cementitious material by mechanical activation, comprising following steps: grinding and activating lead smelting water-quenched slag; then mixing with calcium-based solid waste, magnesium-based solid waste, magnesium oxide, calcium oxide, Portland cement and water; and performing a steam curing and a curing at a room temperature on obtained cementitious material slurry to obtain the lead smelting water-quenched slag-based cementitious material,
wherein the lead smelting water-quenched slag is ground to a particle size of 2.0-120 μm;
the lead smelting water-quenched slag is dried at 100-110° C. for 22-24 h before the grinding, and anhydrous sodium carbonate with a particle size of 10-50 μm is added in an amount of 5% of a weight of the lead smelting water-quenched slag;
a particle size of the calcium oxide is 10-50 μm; and
a mass ratio of the lead smelting water-quenched slag, the calcium-based solid waste, the magnesium-based solid waste, the magnesium oxide, the Portland cement and the water is 1000:(50-70):(40-60):(60-80):(90-110):(230-250).