Multi-solid-waste large-mixing-amount utilization method
A large-volume, fly ash technology, applied in the direction of cement production, etc., can solve problems such as processing difficulties, achieve the effects of reducing environmental pollution, maintaining the ecological environment, and relieving the pressure of solid waste accumulation
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
Method used
Examples
Embodiment 1
[0037] A method for utilizing multiple solid wastes in a large amount, wherein the solid wastes are limestone, alkali slag, fly ash, iron tailings, etc., and the solid wastes are used to prepare cement clinker. The specific steps are as follows:
[0038] (1) crush the limestone until the particle size is not greater than 2mm, and set aside; crush the iron tailings until the particle size is not greater than 2mm, and set aside;
[0039] (2) Take raw materials with the following mass fractions: 40% limestone, 30% alkali slag, 15% fly ash, 10% iron tailings, 5% river sand, mix evenly according to the proportion, and then grind to obtain the final mixture Medium particle size greater than 0.08mm shall not exceed 10% of the total weight;
[0040] (3) Put the raw material after grinding in (2) into the rotary kiln for calcination, the calcination temperature is 1450°C, and the calcination time is 40-45 minutes;
[0041] (4) Cool the raw materials calcined in (3) to room temperature...
Embodiment 2
[0043] A method for utilizing multiple solid wastes in a large amount, wherein the solid wastes are fly ash, and the solid wastes are used to prepare cement. The specific steps are as follows:
[0044] The following mass fractions of raw materials are taken: 25-45% cement clinker, 10-12% gypsum, 30-40% fly ash, 3-5% calcium hydroxide ball milled to a specific surface area of 350㎡ / kg, 80μm sieve residue ( mass fraction) ≤ 4% and then mixed uniformly to obtain cement.
Embodiment 3
[0046] A method for utilizing multiple solid wastes in a large amount, wherein the solid wastes are iron ore waste rocks, and the solid wastes are used to prepare concrete. The specific steps are as follows:
[0047] (1) Crush the waste iron ore and classify it according to the particle size of 4.75mm. The particle size greater than 4.75mm is coarse aggregate, and the particle size smaller than 4.75mm is fine aggregate;
[0048] (2) Raw materials with the following mass fractions: 15-18% cement, 40-50% coarse aggregate, 25-30% fine aggregate, 0.15-0.18% water reducing agent, 5-6% water;
[0049] (3) Stir the cement, coarse aggregate, and fine aggregate evenly for later use;
[0050] (4) Mix the water reducer with water, stir well and set aside;
[0051] (5) Put the mixture obtained in (3) and (4) into a mixer and stir for 2-3 minutes until the slurry is uniform to obtain concrete.
PUM
Property | Measurement | Unit |
---|---|---|
particle diameter | aaaaa | aaaaa |
particle diameter | aaaaa | aaaaa |
particle diameter | aaaaa | aaaaa |
Abstract
Description
Claims
Application Information
- R&D Engineer
- R&D Manager
- IP Professional
- Industry Leading Data Capabilities
- Powerful AI technology
- Patent DNA Extraction
Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.
© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com