Method for producing silicate product by using molybdenum tailings and hydrothermal method

A molybdenum tailings and hydrothermal technology is applied in the field of manufacturing silicate products by using molybdenum tailings hydrothermal method, which can solve the problems of high grinding energy consumption and low product strength, and achieve energy saving and high product strength. , the effect of improving product quality

Inactive Publication Date: 2009-06-17
SOUTH CHINA UNIV OF TECH
View PDF1 Cites 24 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Among them, sand powder is made of sand through grinding. As a natural material, sand mining has been restricted in many places, and the grinding process requires high grinding energy consumption

Method used

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

Examples

Experimental program
Comparison scheme
Effect test

Example

[0018] Examples 1-4: Using molybdenum tailings to manufacture autoclaved aerated concrete blocks and plates

Example Embodiment

[0019] Example 1 Utilizing molybdenum tailings to manufacture autoclaved aerated concrete blocks

[0020] Add 1.30 tons of molybdenum tailings, 0.42 tons of lime, 0.16 tons of cement, 0.04 tons of gypsum, 1.0 kg of aluminum powder, 1.0 tons of water, and stir evenly. Pour the mixed materials into a 6.07m×1.5m×1.25m steel mold. After aeration, stop for 2 hours, cut into blocks and place in an autoclave, and autoclave at a constant temperature of 210°C for 10 hours with a vapor pressure of 1.3 MPa to prepare autoclaved aerated concrete blocks. After testing, the performance of the autoclaved aerated concrete block is excellent, the bulk density grade is B06, and the average compressive strength is 6.0Mpa. The compressive strength of the prepared product is 30% higher than the strength of the aerated concrete of the same bulk density prepared entirely with fly ash. In addition, the use of hydrothermal method does not require high-temperature firing, and the energy consumption is rela...

Example Embodiment

[0021] Example 2 Utilizing molybdenum tailings to manufacture autoclaved aerated concrete blocks

[0022] Add 0.65 tons of molybdenum tailings, 0.65 tons of fly ash, 0.46 tons of lime, 0.18 tons of cement, 0.06 tons of gypsum, 1.7 kg of aluminum powder, add 1.3 tons of water, mix evenly, and pour the mixed material into 6.07m×1.5m×1.25 In the m steel mold, let it stand for 1.5 hours after generating air, cut into blocks and place it in an autoclave, and autoclave at a constant temperature of 200°C for 6 hours with a vapor pressure of 1.15 MPa to prepare autoclaved aerated concrete blocks. After testing, the performance of the autoclaved aerated concrete block is excellent, the bulk density grade is B06, and the average compressive strength is 5.5Mpa. The compressive strength of the prepared product is 18% higher than the strength of the aerated concrete of the same bulk density prepared entirely with fly ash.

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

PropertyMeasurementUnit
Compressive strengthaaaaaaaaaa
Average compressive strengthaaaaaaaaaa
Average compressive strengthaaaaaaaaaa
Login to view more

Abstract

The invention discloses a method for manufacturing a silicate product under hydrothermal condition of molybdenum tailings. The silicate product comprises an autoclaved aerated concrete building block or a slab, a steamed silicate brick, an autoclaved sand lime brick and a calcium silicate slab. The method for manufacturing the silicate product comprises the following steps: evenly mixing raw materials such as the molybdenum tailings, lime, gypsum and the like according to a proportion, shaping the mixture, and then producing the silicate product such as the aerated concrete building block, the brick, the slab and the like under the hydrothermal condition of vapor pressing or steaming, wherein the vapor pressing is carried out for 4 to 10 hours at a constant temperature of between 175 and 210 DEG C, and the steam pressure is 1.0 to 1.3MPa; and the steaming is carried out for 24 to 48 hours at a constant temperature of between 70 and 100 DEG C. The method uses the molybdenum tailings to change waste into valuable. The silicate product has the advantages of high strength, soil conservation, energy conservation, environmental protection, waste recycling and the like, and has remarkable economic benefit and social benefit.

Description

technical field [0001] The invention relates to the technical field of comprehensive utilization of molybdenum tailings, in particular to a method for producing silicate products by hydrothermal method of molybdenum tailings. This method uses raw materials such as molybdenum tailings and lime, cement and gypsum to produce silicate products under autoclaved or steam-cured hydrothermal conditions. The silicate products involved mainly refer to autoclaved aerated concrete blocks or Plates, autoclaved lime-sand bricks, steam-cured silicate bricks and calcium silicate boards. Background technique [0002] With the development of molybdenum ore industry, molybdenum tailings are increasing day by day. Currently, these molybdenum tailings are mainly disposed of in landfills. This processing method consumes manpower and material resources, occupies a large amount of land resources, and also creates potential safety hazards. How to turn waste into wealth and turn waste into resourc...

Claims

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

Application Information

Patent Timeline
no application Login to view more
IPC IPC(8): C04B28/00C04B18/08C04B18/12C04B14/06C04B22/14C04B22/04
CPCC04B28/14Y02W30/91C04B18/144C04B22/064C04B40/0259C04B38/10C04B40/024
Inventor 苏达根钟明峰张志杰赵一翔曾宪方
Owner SOUTH CHINA UNIV OF TECH
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

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap