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System and method for preparation of building 3D printing material from mineralized refuse

A technology of 3D printing and mineralized waste, which is applied in the direction of additive processing, sustainable waste treatment, solid waste management, etc., can solve the problems of high cost and inability to use large-scale construction 3D printing materials, so as to reduce consumption and save process, waste reduction effect

Active Publication Date: 2017-06-20
SHANDONG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the cost of building 3D printing materials prepared to meet the requirements of use is often too high, which is also an important reason why architectural 3D printing materials cannot be used on a large scale.

Method used

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  • System and method for preparation of building 3D printing material from mineralized refuse
  • System and method for preparation of building 3D printing material from mineralized refuse
  • System and method for preparation of building 3D printing material from mineralized refuse

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0050] like figure 1 As shown, the raw pulp mineralized garbage, aluminum ash and calcium carbide slag are mixed and then hydrated. The solid-to-liquid ratio is 1:4 to obtain an alkali-containing slurry. The waste heat of the kiln gas recovered by the waste heat equipment is used to heat the alkali-containing slurry to make the alkali-containing slurry The temperature of the alkali slurry is maintained at 60-70°C, so that the alkali content of the original mineralized waste is reduced to below 10% of the original value. The moisture content of the batching slurry is 43% (wt%) after pressure filtration, and after natural drying, the moisture content is reduced to 18%. % (wt%). The dried raw meal is sent into the dryer. Based on the dried solid matter, calcium carbide slag accounts for 36.66 parts by weight, desulfurized gypsum accounts for 17.64 parts by weight, mineralized waste accounts for 7.86 parts by weight, and aluminum ash accounts for 37.8 parts by weight. After dryi...

Embodiment 2

[0062] The raw pulp mineralized garbage, aluminum ash and calcium carbide slag are mixed and then hydrated with a solid-to-liquid ratio of 1:3 to obtain an alkali-containing slurry. The alkali-containing slurry is heated by the waste heat recovered from the kiln gas by the waste heat equipment to make the alkali-containing slurry temperature Maintain at 60-70°C to reduce the alkali content of the original mineralized waste to less than 10% of the original value. The moisture content of the batching slurry is 40% (wt%) after pressure filtration, and the moisture is reduced to 18% (wt%) after natural drying. %). Send the dried raw meal into the dryer. Based on the dried solid matter, calcium carbide slag accounts for 38.39 parts by weight, desulfurized gypsum accounts for 14.84 parts by weight, mineralized waste accounts for 12.34 parts by weight, and aluminum ash accounts for 38.39 parts by weight. 34.43 parts by weight. After drying and grinding, it is calcined in a kiln, the...

Embodiment 3

[0064] The raw pulp mineralized garbage, aluminum ash and calcium carbide slag are mixed and then hydrated with a solid-to-liquid ratio of 1:3 to obtain an alkali-containing slurry. The alkali-containing slurry is heated by the waste heat recovered from the kiln gas by the waste heat equipment to make the alkali-containing slurry temperature Maintain at 60-70°C to reduce the alkali content of the original mineralized waste to less than 10% of the original value. The moisture content of the batching slurry is 40% (wt%) after pressure filtration, and the moisture is reduced to 18% (wt%) after natural drying. %). The dried raw meal is sent into the dryer. Based on the dried solid matter, calcium carbide slag accounts for 42.39 parts by weight, desulfurized gypsum accounts for 18.54 parts by weight, mineralized waste accounts for 16.34 parts by weight, and aluminum ash accounts for 40.43 parts by weight.

[0065] After drying and grinding, it is calcined in a kiln at a temperatur...

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Abstract

The invention discloses a system and method for preparation of a building 3D printing material from mineralized refuse. The method includes the steps of: 1) putting mineralized refuse, aluminum ash, carbide slag and water into a homogenization pool according to a set ratio to be blended into a paste, conducting heating homogenization, and the homogenization time at 2-4h; 2) conducting pressure filtration on the homogenized material, and performing drying to obtain a mixed material, heating desulfurized gypsum for dehydration to convert it into semi-hydrated gypsum; 3) mixing the mixture and the semi-hydrated gypsum evenly in ratio, and then performing powder grinding; 4) calcining the ground material, adding pulverized coal into the mixture during calcination to perform oxygen-enriched combustion so as to obtain a 3D printing material precursor, wherein the mineralized refuse, aluminum ash, carbide slag and desulfurized gypsum are in a mass ratio of 7-15:30-45:30-45:15-20; and 5) mixing the 3D printing material precursor, desulfurized gypsum and limestone in certain ratio and performing grinding, then conducting compounding with fine aggregate, an admixture, a water reducer, a composite coagulation regulator and a stabilizer, thus obtaining the building 3D printing material.

Description

technical field [0001] The invention belongs to the field of solid waste treatment and preparation of high-performance building materials, and in particular relates to a system and method for preparing building 3D printing materials by using mineralized waste. Background technique [0002] 3D printing is affecting people's production and life as a rapidly developing new manufacturing technology. Architectural 3D printing technology has outstanding features such as efficient modeling, economical and environmental protection, precise processing, personalized production, and no construction waste. It is believed to subvert the traditional architectural model and bring the construction industry into the digital age. [0003] The core key of architectural 3D printing technology is the printing ink material used. In fact, its essence is a kind of building material with rapid hardening, early strength and high strength. At present, the materials used in 3D printing buildings are s...

Claims

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Application Information

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IPC IPC(8): C04B28/14C04B18/30B33Y70/00B33Y10/00
CPCY02W30/91C04B28/144B33Y10/00B33Y70/00C04B18/30C04B2201/50C04B18/0481C04B14/06C04B18/141C04B2103/302C04B2103/0068C04B2103/22
Inventor 王文龙任常在宋占龙赵希强毛岩鹏孙静
Owner SHANDONG UNIV
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