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Baked light-weight environmental-friendly bricks prepared from paper mill sludge and manufacturing method thereof

A technology of papermaking sludge and environmentally friendly bricks, which is applied in building construction, building components, sustainable waste treatment, etc., can solve problems such as high moisture content, polluted soil and groundwater resources, environmental hazards, etc., and achieves accelerated drying speed and high performance Good, energy-saving effect

Active Publication Date: 2012-07-11
清远绿由环保科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the composition of papermaking sludge is relatively complex, with high water content, especially heavy metals. If it is directly buried without treatment, it will pollute soil and groundwater resources, easily cause secondary pollution, and cause serious harm to the environment.

Method used

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  • Baked light-weight environmental-friendly bricks prepared from paper mill sludge and manufacturing method thereof
  • Baked light-weight environmental-friendly bricks prepared from paper mill sludge and manufacturing method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0037] It is a kind of mixed waste separated from the industrial waste water produced by the paper mill during the production of paper products and the domestic sewage discharged from the living area of ​​the factory after being treated by the sewage treatment plant, and then undergoes dehydration, deodorization, disinfection and sterilization, and chelation treatment. , dried, and then milled and sorted to make paper sludge powder with a particle size of less than 2mm;

[0038] A kind of solid waste, such as the waste mud and slag discharged from the excavation of foundations and underground parking lots in residential construction and the mud and sand discharged from municipal construction projects, is sorted, crushed, crushed, screened, dried, and then pulverized and separated. After selection, it is made into engineering waste sludge powder with a particle size of less than 2mm;

[0039] It is a kind of waste that discharges a large amount of silt and waste sand during the...

Embodiment 2

[0044] Get the papermaking sludge powder material 35kg of embodiment 1, engineering waste sludge powder material 36kg, river silt powder material 30kg, garbage ash powder material 25kg, slag powder material 25kg, particle diameter be the unslaked lime powder material 15kg of 0.08mm, Calcium sulfate powder 4.5kg, sodium carbonate 1.5kg, borax 1.5kg, ferrous sulfate 2.5kg, magnesium sulfate 7kg, Li macromolecule heavy metal collector 0.6kg and water 20kg, the above-mentioned raw materials were mixed and stirred with a twin-shaft mixer to become moist After being shaped, it is extruded into a rectangular shape by a vacuum extruder, cut into shape by a blank cutter, and made into a light-weight environmentally friendly brick from papermaking sludge under a pressure of 29Mpa. After natural drying for 7 days, the formed and naturally dried Paper-making sludge green bricks are sent to the tunnel kiln by battery car for roasting, and then made into paper-making sludge sintered light-we...

Embodiment 3

[0046] Get the papermaking sludge powder material 40kg of embodiment 1, engineering waste sludge powder material 28kg, river silt powder material 35kg, garbage ash powder material 18kg, slag powder material 28kg, particle diameter be the unslaked lime powder material 12kg of 0.08mm, Calcium sulfate powder 6kg, sodium carbonate 1kg, borax 2kg, ferrous sulfate 2kg, magnesium sulfate 8kg, Li macromolecule heavy metal collector 0.5kg and water 25kg, mix the above-mentioned raw materials and use a twin-shaft mixer to stir it into a wet shape and then use a mechanical Vibration extrusion molding, under the pressure of 30Mpa to make light hollow blocks of papermaking sludge, after 7 days of natural drying, then send the formed light hollow blocks of papermaking sludge to the tunnel kiln with a battery car. Roasting, after roasting, it is made into lightweight hollow block products from papermaking sludge. After testing, the average compressive strength is: 8.0Mpa, the minimum value o...

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Abstract

The invention relates to baked light-weight environmental-friendly bricks prepared from paper mill sludge and a manufacturing method thereof. The method is characterized by comprising the following steps of: mixing the paper mill sludge, engineering waste sludge, river sludge, refuse ash, slag, ground quick lime, calcium sulfate, sodium carbonate, borax, ferrous sulphate, magnesium sulfate, Li high molecular heavy metal collector, water and the like serving as raw materials, stirring the mixture into a damp product by using a double-shaft mixer and extruding the damp product into a rectangular strip-shaped product by using a de-airing extruder; cutting and molding the extruded product by using a blank cutter; manufacturing paper mill sludge light-weight environmental-friendly bricks underthe pressure of between 20 and 30 MPa; feeding the molded and naturally-dried light-weight environmental-friendly bricks into a tunnel kiln by using a battery car to bake the bricks; and obtaining light-weight environmental-friendly brick products after baking. The raw materials can be prepared into hollow bricks and sidewalk bricks with different specifications. The product has the advantages oflight weight, high intensity, no pollution, low cost and good benefit.

Description

technical field [0001] The present invention relates to a kind of sintered light-weight environment-friendly brick produced by papermaking sludge, specifically, it is sludge discharged from papermaking, dried mud powder after dehydration, engineering waste sludge, river sludge, garbage ash and The sintered light-weight environmental protection brick produced with slag as the main raw material belongs to the field of waste treatment. [0002] The invention also relates to a manufacturing method of the sintered lightweight environmental protection brick. Background technique [0003] Papermaking sludge is the industrial wastewater produced in the process of producing various paper products in the paper mill and the domestic sewage discharged from the living area of ​​the factory. A kind of mixed solid waste obtained from froth, the composition sources of papermaking sludge are relatively complex, which contains a large amount of cadmium, mercury, lead, chromium, arsenic, nicke...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): E04C1/00C04B30/00C04B18/30
CPCY02W30/91
Inventor 李桓宇古耀坤
Owner 清远绿由环保科技有限公司
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