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Method of manufacturing lightweight material

A technology for lightweight materials and mixtures, applied in the field of manufacturing lightweight materials, can solve the problems of high cost, complexity, high cost of foam glass and foam ceramic raw materials

Active Publication Date: 2018-04-17
NANYANG TECH UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, due to the complexities and high costs associated with sorting recycled glass and ceramics, recycled glass or ceramics are not typically used to produce cellular glass and ceramic foam, which are relatively expensive in part due to high raw material costs

Method used

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  • Method of manufacturing lightweight material
  • Method of manufacturing lightweight material
  • Method of manufacturing lightweight material

Examples

Experimental program
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Embodiment 1

[0097] Example 1: Lightweight aggregate (LA)

[0098] This technology converts incineration ash or marine clay or mud or their mixtures into low density (0.25g / cm 3 to 0.8g / cm 3 ), low water absorption (less than 1%), uniform pore size (0.2mm to 1.0mm) and high mechanical strength (1.5MPa to 10MPa) lightweight aggregate. The main component of incineration ash, marine clay and mud is SiO 2 , CaO, Al 2 o 3 、Na 2 O, and Fe 2 o 3 , similar to glass and clay. Therefore, it is possible to use incineration ash and marine clay as raw materials to produce lightweight aggregates.

[0099] Contaminated solid waste (incineration ash / marine clay / slurry / waste glass or a mixture thereof) is up to 98%. In addition, the sintering temperature for the production of lightweight aggregate is 1000°C to 1100°C, and the duration is short, 1 minute, which does not result in high energy consumption. This technology is timely and adaptable to Singaporean and global efforts in sustainable devel...

Embodiment 11

[0115] Example 1.1: Production of LA without sodium metasilicate

Embodiment 111

[0116] Example 1.1.1: Processing conditions and materials used

[0117] Solid waste mixture: incineration ash / waste glass=3 / 2 (weight ratio)

[0118] Additive: 0.25wt% SiC

[0119] Heating rate: 10℃ / min

[0120] Hold time at optimum temperature: 2 minutes.

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Abstract

A method of manufacturing a lightweight material is provided. The method comprises the steps: a) dispersing a solid waste comprising at least one of a contaminated solid waste, marine clay, mud, wasteglass, or ash obtained from incineration of waste in an aqueous reagent to form a dispersion; b) mixing the dispersion with an additive comprising a foaming agent and a metal silicate to form a mixture; and c) curing the mixture to obtain the lightweight material. A lightweight material manufactured by the method, and use of the method in the manufacture of a lightweight aggregate, a thermal insulative panel, a lightweight partition wall, or a lightweight brick are also provided.

Description

[0001] Cross References to Related Applications [0002] This application claims the benefit of priority from Singapore Patent Application No. 10201501250S, filed 17 February 2015, the contents of which are hereby incorporated by reference in their entirety into this application for all purposes. technical field [0003] Various embodiments involve the use of solid waste, including polluted solid waste, marine clay, mud, waste glass, or ash obtained from waste incineration, to produce lightweight materials. Background technique [0004] Due to rapid urbanization, large and rapidly growing quantities of sewage sludge and municipal solid waste (MSW) are produced every year all over the world. In the United States alone, annual municipal solid waste production is 200 to 400 million tons. These have caused serious global environmental problems. [0005] To manage waste, most developed countries including Singapore and Europe use incineration. Through incineration, about 70% t...

Claims

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Application Information

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IPC IPC(8): B09B3/00C04B18/10C04B18/04C04B28/26C04B38/10
CPCC04B28/26C04B18/021C04B18/027C04B38/02C04B2111/00612C04B2111/28Y02W30/91E04C2/049B09B3/21B09B2101/30C04B14/10C04B14/22C04B18/0472C04B18/06C04B14/022C04B14/24C04B14/28C04B14/308C04B14/324C04B22/10C04B22/143C04B40/0071C04B40/0263
Inventor 陈达洋许清池
Owner NANYANG TECH UNIV