Method for preparing non-fired and non-steamed bricks by using sintering dry desulphurization byproduct

A technology of non-burning, non-steaming bricks and desulfurization by-products is applied in the field of comprehensive utilization of resources, which can solve the problems of few desulfurization by-products and comprehensive utilization problems, and achieve the effects of improving early mechanical properties, improving mechanical properties, and product energy saving and environmental protection.

Active Publication Date: 2010-03-17
SHOUGANG CORPORATION
2 Cites 15 Cited by

AI-Extracted Technical Summary

Problems solved by technology

[0005] The above-mentioned patented technologies have made some breakthroughs in the field of comprehensive utilization of desulfurization by-products, but the research objects are limited to by-products of sintering flue gas desulfurization in power plants, and do not involve by-products of dry desulfurization of sintering flue gas in iron and steel enterpris...
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Abstract

A method for preparing non-fired and non-steamed bricks by using sintering a dry desulphurization byproduct belongs to the field of resources comprehensive utilization. The method comprises the stepsof mixing the desulphurization byproduct with water to prepare a mixed material with a concentration ranging from 10% to 80%, stirring uniformly, and airing naturally a filter cake after filtering themixed material so that the water content becomes 10% to 30%; re-stacking the stewed steel slag for 170 days to 200 days; sieving the steel slag in a sieve with the size of 10mm, and taking out the minus sieve for sieving in another sieve with the size of 3mm, and then taking out the plus sieve; dosing based on the proportion of raw materials; and after stirring uniformly by a stirrer, feeding thestirred product into a brick machine to be pressed by the machine, and naturally curing in air for 28 days to obtain a finished product. The method has the advantages that the process route of non-firing and non-steaming is adopted to prepare energy-saving bricks, therefore, the products are energy saving and environment friendly with lower cost and the energy-saving bricks are no longer crackedin use.

Application Domain

Technology Topic

Image

  • Method for preparing non-fired and non-steamed bricks by using sintering dry desulphurization byproduct
  • Method for preparing non-fired and non-steamed bricks by using sintering dry desulphurization byproduct

Examples

  • Experimental program(1)

Example Embodiment

[0029] Example 1:
[0030] Refer to the national standard "Test Methods for Wall Bricks" GB/T2542-92 for experiment and performance testing.
[0031] The desulfurization by-product is mixed with water to prepare a mixture with a concentration of 60%, and air is blown into it to mix and stir, and the stirring time is 20 minutes. The mud cake after the mixture is filtered by a filter press is naturally dried in the air to a moisture content of 20%.
[0032] The steel slag after the stewing slag treatment is piled up for another 180 days, and it is sieved to take 3mm~10mm granular materials.
[0033] The materials are measured and mixed according to the material structure shown in Table 1, after stirring for 5 minutes, they are fed into the brick making machine and molded by mechanical compression, and cured under natural conditions for 28 days to obtain the finished double-free bricks.
[0034] Table 1 The influence of desulfurization by-product content on the mechanical properties of non-burning and non-steaming energy-saving brick
[0035]
[0036] Table 2 shows the qualified judgment value and classification of the mechanical properties of energy-saving, non-burning and non-steaming energy-saving bricks according to national standards.
[0037] Table 2 Judgment Standard of Strength Level
[0038] strength level
[0039] After 28 days of natural curing, the appearance of the non-burning and non-steaming energy-saving bricks is neat, flat and free of defects. In the case of various material ratios, the compressive strength of the non-burning and non-steaming energy-saving bricks is shown in Table 1. The results show that the obtained Non-burning and non-steaming energy-saving bricks can meet the strength requirements of MU10 bricks in the national standard.
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

PUM

no PUM

Description & Claims & Application Information

We can also present the details of the Description, Claims and Application information to help users get a comprehensive understanding of the technical details of the patent, such as background art, summary of invention, brief description of drawings, description of embodiments, and other original content. On the other hand, users can also determine the specific scope of protection of the technology through the list of claims; as well as understand the changes in the life cycle of the technology with the presentation of the patent timeline. Login to view more.
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

Similar technology patents

Longitudinal uniform flow field flow battery and working method thereof

ActiveCN109742434AIncrease responsivenessImprove battery efficiencyElectrolyte stream managementRegenerative fuel cellsEngineeringFlow battery
Owner:XI AN JIAOTONG UNIV

Propenyl elastomer composition and preparation method thereof

PendingCN111592721ALow costIncrease responsivenessPolymer chemistryTriallyl isocyanurate
Owner:南京金陵塑胶化工有限公司

Classification and recommendation of technical efficacy words

  • Increase responsiveness
  • Improve mechanical properties

Filtering rod for cigarette and preparing method

InactiveCN101023811AGood filterabilityImprove mechanical propertiesTobacco smoke filtersN-vinyl-pyrrolidone polymer adhesivesPolyesterChemistry
Owner:CHANGCHUN INST OF APPLIED CHEMISTRY - CHINESE ACAD OF SCI
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products