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Method for co-processing construction waste and bulk industrial solid waste

A technology of construction waste and industrial solid waste, applied in the field of building materials, can solve the problems of high utilization cost, impact of tailings pond on ecological environment, lack of utilization technology, etc., and achieve the effect of cost economy

Inactive Publication Date: 2021-02-26
江苏福翊铭环保科技有限公司
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Restricted by problems such as low resource grade, high utilization cost, poor economic benefits, and lack of utilization technology, tailings are still mainly stored in occupied land. Tailings reservoirs affect the ecological environment and bring serious safety hazards, which require long-term development of enterprises. cycle management

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  • Method for co-processing construction waste and bulk industrial solid waste

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Embodiment 1

[0029] Embodiment 1: A method for co-processing construction waste with bulk industrial solid waste, the main steps are as follows:

[0030] Step 1. Research on the properties of bulk solid waste iron ore tailings;

[0031]Iron ore mining and beneficiation enterprises produce a large amount of wet tailings after mining the raw ore through ore grinding and magnetic separation to select iron concentrate, which is a large amount of solid waste. The stockpiling needs to build a tailings pond with a huge capacity, occupying non-renewable land resources , and there are safety and social ecological hazards, which must be handled properly; the iron ore tailings are subjected to particle size moisture measurement and mineral identification, particle size 2 o 3 7.21%, MgO3.61%, SiO 2 29.10%, the ore mineral composition test shows that the metal minerals are mainly hematite, siderite, a small amount of magnetite, pyrite, and pyrrhotite; the main gangue minerals are iron dolomite and gar...

example 1

[0054] Due to the extremely fine particle size of tailings, of which 2 29.10% is also low, and the slag and dust contain high silicon content, reaching 60%, which can make up for the contradiction of insufficient silicon content. When the ratio of tailings and slag is 1:2:0.1, SiO 2 Reached 52.66%. The particle size of the slag is relatively coarse, and after being crushed by the roller machine, the particle size is below 3mm; it is sieved through the cylinder impurity removal sieve together with the tailings, and the tree roots and other debris larger than 2mm are screened out, and the material under the 2mm screen is then passed through the roller Machine crushing and rolling, the three materials are mixed evenly, the particle size is reduced to below 2mm, and the plasticity index of the mixed material is 9.5, 36% of which are less than 0.05mm, 40% are 0.05-1.2mm, and 24% are 1.2-2mm. Remove the iron parts, reduce the follow-up impact, produce qualified fired brick raw mate...

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Abstract

The invention relates to a method for co-processing construction waste and bulk industrial solid waste. The method comprises the following steps: step 1, researching properties of bulk solid waste iron ore tailings; 2, researching the properties of the construction waste; 3, performing a construction waste resource utilization process; 4, setting the rotating speed of a rotor of the impact crusher; 5, arranging a permanent magnet iron remover; 6, determining the gradient of a large material funnel; 7, performing dry dust removal; 8, performing product aggregate detection; and 9, producing sintered bricks from muck, dust and tailings. According to the technical scheme, construction waste is treated, and finished aggregate is produced; then the muck is separated out and dust is collected forcontinuous utilization, and the muck and the collected dust are mixed with iron ore tailings to be used as sintering brickmaking raw materials.

Description

technical field [0001] The invention relates to a method, in particular to a method for co-processing construction waste with bulk industrial solid waste, and belongs to the technical field of building materials. Background technique [0002] The amount of construction waste generated in various countries in the world accounts for about 20% to 60% of urban solid waste. In recent years, the area of ​​houses built in my country has reached 1.6 to 2 billion m2 per year. Building decoration, reconstruction projects, municipal engineering, and factory construction also generate a large amount of construction waste. my country is in the stage of accelerated urbanization, and the amount of construction waste produced by renovation and expansion is huge. According to preliminary statistics, the annual construction waste production in my country is currently 3.5-3.7 billion tons, and it is expected to reach 5-6 billion tons by 2023. The main treatment methods of construction waste are...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B18/16C04B20/02B03C1/30C04B33/132
CPCC04B18/16C04B20/026B03C1/30C04B33/1324C04B33/1328Y02W30/91Y02P40/60
Inventor 王晓明王安南杨国英钱扬才潘正涛嵇正强
Owner 江苏福翊铭环保科技有限公司
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