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Method for preparing water-permeable brick by utilizing cast iron casting waste as well as water-permeable brick prepared thereby

A waste and permeable brick technology, applied in the direction of solid waste management, sustainable waste treatment, application, etc., can solve the problems of polluting the environment, inability to realize efficient utilization of waste sand, waste slag and waste dust, waste of resources, etc., and achieve resource conservation , It is conducive to the maintenance of water permeability and the effect of improving strength

Active Publication Date: 2018-07-24
LIUZHOU LIUJING TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, the reuse of foundry waste has always been a subject of great concern. The existing waste sand treatment methods are usually reused after purification or made into building materials. The waste residue is usually used as road construction materials or directly landfilled. Dust is usually used as secondary raw material in cement plants and sand making plants, but these treatment methods cannot realize efficient utilization of waste sand, waste slag and waste dust, which not only wastes resources but also pollutes the environment

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0036] In this example, the permeable bricks made of cast iron casting waste were prepared through the following steps:

[0037] (1) The cast iron foundry waste is pulverized, and then sieved to obtain granular cast iron foundry waste and gravel cast iron foundry waste, wherein the grain size of the gravel cast iron foundry waste is 2-5mm, and the granular cast iron foundry waste The particle size is less than 1mm. ;

[0038] (2) the gritty cast iron casting waste and the mass fraction are 36% hydrochloric acid and water are placed in the reaction vessel and mixed, and stirred by the stirrer, utilize water cooling device to cool down the reaction vessel in the reaction process, keep the reaction temperature at At 40°C, a mixture of ferric chloride is obtained from some iron compounds;

[0039] (3) Add granular cast iron casting waste, medical stone particles, porous silica-alumina composite ceramic particles, cement, resin adhesive, sodium dodecylsulfonate and naphthalene-ba...

Embodiment 2

[0045] In this example, the permeable bricks made of cast iron casting waste were prepared through the following steps:

[0046] (1) The cast iron foundry waste is pulverized, and then sieved to obtain granular cast iron foundry waste and gravel cast iron foundry waste, wherein the grain size of the gravel cast iron foundry waste is 2-5mm, and the granular cast iron foundry waste The particle size is less than 1mm. ;

[0047] (2) the gritty cast iron casting waste and the mass fraction are 40% hydrochloric acid and water are placed in the reaction vessel and mixed, and stirred by the stirrer, utilize water cooling device to cool down the reaction vessel in the reaction process, keep the reaction temperature at At 60°C, a mixture of ferric chloride is obtained from some iron compounds;

[0048] (3) Add granular cast iron casting waste, medical stone particles, porous silica-alumina composite ceramic particles, cement, resin adhesive, sodium lauryl sulfate and polycarboxylate ...

Embodiment 3

[0054] In this example, the permeable bricks made of cast iron casting waste were prepared through the following steps:

[0055] (1) The cast iron foundry waste is pulverized, and then sieved to obtain granular cast iron foundry waste and gravel cast iron foundry waste, wherein the grain size of the gravel cast iron foundry waste is 2-5mm, and the granular cast iron foundry waste The particle size is less than 1mm. ;

[0056] (2) the gritty cast iron casting waste and the mass fraction are 38% hydrochloric acid and water are placed in the reaction vessel and mixed, and stirred by the stirrer, utilize the water cooling device to cool down the reaction vessel in the reaction process, keep the reaction temperature at 50°C, a mixture of ferric chloride is obtained from some iron compounds;

[0057] (3) Add granular cast iron casting waste, medical stone particles, porous silica-alumina composite ceramic particles, cement, resin adhesive, triethanolamine soap and aliphatic superp...

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Abstract

The invention relates to a method for preparing a water-permeable brick by utilizing cast iron casting waste as well as the water-permeable brick prepared thereby. The water-permeable brick is prepared from the following raw materials in parts by weight: 15 to 20 parts of gravel-shaped cast iron casting waste, 5 to 10 parts of granular cast iron casting waste, 2 to 4 parts of hydrochloric acid, 3to 5 parts of water, 3 to 5 parts of medical stone granules, 18 to 22 parts of porous silicon oxide-aluminum oxide composite ceramic granules, 10 to 12 parts of cement, 5 to 9 parts of resin adhesive,1 to 3 parts of surfactant and 2 to 4 parts of water reducer. The cast iron casting waste serves as the main raw material, so that effective utilization of the casting waste residues, waste sand andwaste dust is realized; the hydrochloric acid reacts with the iron element in the cast iron casting waste, the generated ferric hydroxide colloid can flocculate the water, and the water quality is purified; meanwhile, the iron element in the water-permeable brick can generate loose oxide under the natural condition, so that the air permeability of the water-permeable brick is improved and maintaining of the water-permeable effect is facilitated.

Description

technical field [0001] The invention relates to the field of casting waste recycling, in particular to a method for preparing permeable bricks from cast iron casting waste and the prepared permeable bricks. Background technique [0002] Casting is an extremely complex production process that uses a variety of raw and auxiliary materials and undergoes metallurgical smelting. Casting can be divided into material preparation after the furnace, smelting, spheroidizing inoculation treatment, sand treatment, core making, molding, pouring, and sand shakeout. , cleaning, heat treatment, production process and inspection of finished castings and other 11 structural parts. During the casting process, a large amount of waste will be generated, mainly waste sand, waste slag, waste dust, waste gas, including waste sand produced by sand casting, Exhaust air molds are based on waste dust collected in the foundry environment. At present, the reuse of foundry waste has always been a subject...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B28/00C04B38/08C04B18/14C04B20/02
CPCC04B18/142C04B20/023C04B28/00C04B2111/00284C04B2201/50C04B22/12C04B14/14C04B18/023C04B24/24C04B24/16C04B2103/302C04B38/08C04B24/122Y02W30/91
Inventor 任文强
Owner LIUZHOU LIUJING TECH CO LTD