Low-carbon clinker doped with scattered metal oxygen-enriched smelting slag, road cement and preparation method of low-carbon clinker

A technology of scattered metals and road cement, which is applied in the field of low-carbon road cement, can solve the problems of low overall utilization rate, comprehensive utilization rate of copper tailings resources less than 20%, and occupying sites, so as to reduce serious burden and treatment costs, and achieve good results. Composite gelation effect, the effect of reducing production energy consumption

CN114804674AActive Publication Date: 2022-07-29江西省建材科研设计院有限公司
11 Cites 0 Cited by

Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Publication Date
2022-07-29

Smart Images

  • Figure 1
    Figure 1
  • Figure 2
    Figure 2
  • Figure 3
    Figure 3
Patent Text Reader

Abstract

The invention provides a scattered metal doped oxygen-enriched smelting slag low-carbon clinker. The scattered metal doped oxygen-enriched smelting slag low-carbon clinker is prepared from 75-85 parts of limestone, 3-10 parts of fine-grained copper tail mud, 2-6 parts of sandstone and 6-15 parts of scattered metal oxygen-enriched smelting slag. The invention further provides road cement using the low-carbon clinker. The road cement is prepared from 50-70 parts of the low-carbon cement clinker, 5-25 parts of scattered metal oxygen-enriched smelting slag, 5-20 parts of lithium slag, 10-30 parts of water granulated slag, 1-5 parts of an inorganic exciting agent and 0.1 part of a functional grinding aid. The invention also provides a method for preparing the road cement. The low-carbon clinker disclosed by the invention is high in strength, wear-resistant and lower in firing temperature, and the production energy consumption is reduced; the prepared low-carbon road cement is low in clinker content, high in later strength, good in wear resistance and low in shrinkage; meanwhile, resource utilization of various industrial waste residues can be achieved, and the method has the important significance of being economical, low-carbon, environmentally friendly and the like.
Need to check novelty before this filing date? Find Prior Art

Description

technical field

[0001] The invention relates to the field of inorganic building materials, in particular to a low-carbon road cement mixed with scattered metal oxygen-enriched smelting slag, and a preparation method thereof. Background technique

[0002] The annual output of solid waste in my country's non-ferrous smelting industry exceeds 10 million tons, leaving a large amount of scattered metals. Due to the scattered sources of non-ferrous solid waste, the content of scattered metals fluctuates greatly, and the comprehensive utilization rate is low. For lead-zinc smelting slag, based on the principle of similar compatibility, with copper, nickel, etc. as the carrier, the pyrotechnic oxygen-enriched smelting process is carried out at 1150 ℃ ~ 1250 ℃ in the smelting furnace to realize the valuable recovery of selenium / tellurium in solid waste , but also produced a large amount of slag. With the structural upgrading of the smelting industry, the output of oxygen-enriched sm...

Examples

Embodiment 1

[0054] After the raw materials are dried, 78.5 parts of limestone, 7.1 parts of fine-grained copper tailing mud, 2.8 parts of sandstone, and 11.6 parts of scattered metal oxygen-rich smelting slag are mixed by mass, KH, SM and IM are 0.96, 1.75 and 0.90 respectively, and the powder is ground. After sifting, sifting, homogenizing and making embryonic cake, it is added to the electric furnace for calcination, the calcination temperature is 1380 ℃, the temperature is kept for 30 minutes, and it is taken out and cooled in the atmosphere to obtain road cement clinker.

[0055] According to the mass, 60 parts of cement clinker, 13 parts of scattered metal oxygen-rich smelting slag, 15 parts of lithium slag, 9 parts of water slag, 3 parts of chemical activator, and 0.1 part of compound grinding aid were taken and ground for 30 minutes to obtain a low-carbon road. cement.

[0056] Among the chemical activators, the mass ratio of sodium silicate to aluminum sulfate is 60:40.

[0057] ...

Embodiment 2

[0059] After the raw materials are dried, 78.1 parts of limestone, 5.1 parts of fine-grained copper tailings, 3.8 parts of sandstone, and 13.0 parts of scattered metal oxygen-rich smelting slag are mixed according to mass, KH, SM and IM are 0.97, 1.64 and 0.82 respectively, and the powder is ground. After sifting, sifting, homogenizing and making embryonic cake, it is added to the electric furnace for calcination, the calcination temperature is 1380 ℃, the temperature is kept for 45 minutes, and it is taken out and cooled in the atmosphere to obtain road cement clinker.

[0060] Take 55 parts of cement clinker, 10 parts of scattered metal oxygen-enriched smelting slag, 11 parts of lithium slag, 20 parts of water slag, 4 parts of chemical activator, and 0.1 part of compound grinding aid, and grind for 30 minutes to obtain a low-carbon road. cement.

[0061] Among the chemical activators, the mass ratio of sodium silicate to aluminum sulfate is 30:70.

[0062] Among the composi...

Embodiment 3

[0064] After the raw materials are dried, 78.9 parts of limestone, 7.2 parts of fine-grained copper tailings, 3.9 parts of sandstone, and 10.0 parts of scattered metal oxygen-enriched smelting slag are mixed by mass, KH, SM and IM are 0.93, 1.98 and 0.98 respectively, and the powder is ground. After sifting, sifting, homogenizing and making embryonic cake, it is added to the electric furnace for calcination, the calcination temperature is 1360 ℃, the temperature is kept for 45 minutes, and it is taken out and cooled in the atmosphere to obtain road cement clinker.

[0065] According to the mass, 63 parts of cement clinker, 6 parts of scattered metal oxygen-rich smelting slag, 15 parts of lithium slag, 10 parts of water slag, 4 parts of chemical activator and 0.1 part of compound grinding aid were taken and ground for 30 minutes to obtain a low-carbon road. cement.

[0066]Among the chemical activators, the mass ratio of sodium silicate to aluminum sulfate is 50:50.

[0067] A...