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Method for producing environment-friendly baking-free hollow brick from oil-containing sludge and construction wastes

A construction waste and hollow brick technology is applied in the field of industrial waste resource utilization and environmental protection energy, which can solve problems such as difficult disposal of oily sludge, reduce groundwater and soil opportunities, highlight environmental benefits, and reduce landfill loads.

Inactive Publication Date: 2014-04-09
DALIAN DONGTAI INDAL WASTE TREATMENT
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] In order to solve the above problem of difficult treatment of oily sludge, the present invention provides a method for harmless and resourceful treatment of oily sludge. After deodorization, heavy metal removal, and solidification treatment, it is combined with recycled fine aggregate of construction waste and additional chemicals Mixing in an appropriate proportion to produce environmentally friendly non-burning hollow bricks ensures the performance of environmentally friendly non-burning hollow bricks while improving the resource conversion rate

Method used

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  • Method for producing environment-friendly baking-free hollow brick from oil-containing sludge and construction wastes
  • Method for producing environment-friendly baking-free hollow brick from oil-containing sludge and construction wastes

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] Take 40kg of oily sludge from a petrochemical enterprise, with an oil content of 12.3% and a water content of 80%, add 0.2kg of sodium hypochlorite and 12kg of calcium chloride, and mix and stir for 5 minutes; take 60kg of recycled fine aggregate, 10kg of cement, and Calcium chloride 12kg, aluminum powder 0.4kg, sodium sulfate 1.0kg, sodium chloride 0.4kg, gypsum 0.25kg, sodium nitrite 0.2kg, calcium lignosulfonate 0.4kg and naphthalene superplasticizer 0.1kg through automatic feeding The system enters the mixing mixer and stirs evenly for 20 minutes; the mixture is made into a non-fired hollow brick with a specification of 390mm*190mm*190*mm under a pressure of 25MPa, and the finished product is made after natural curing for 20 days.

[0029] The average compressive strength of the 5 non-fired hollow bricks prepared by testing is 10.23Mpa, the flexural strength is 5.62Mpa, the relative moisture content is 27%, and the height of the water surface drop of the 3 bricks is ...

Embodiment 2

[0031] Take 50kg of oily sludge from a petrochemical enterprise, with an oil content of 14.1% and a water content of 76%, add 0.3kg of sodium hypochlorite and 15kg of calcium chloride, and mix and stir for 5 minutes; take 70kg of recycled fine aggregate, 13kg of cement, chlorine Calcium 15kg, aluminum powder 0.7kg, sodium sulfate 1.25kg, sodium chloride 0.6kg, gypsum 0.4kg, sodium nitrite 0.35kg, calcium lignosulfonate 0.5kg, naphthalene superplasticizer 0.1kg through the automatic feeding system Put it into the mixing mixer and stir evenly for 20 minutes; make the mixture under the pressure of 30MPa into a non-fired hollow brick with a specification of 390mm*190mm*190*mm, and make it into a finished product after natural curing for 20 days.

[0032] The average compressive strength of the 5 non-fired hollow bricks prepared by testing is 12.37Mpa, the flexural strength is 6.11Mpa, the relative moisture content is 22%, and the water surface drop height of the three bricks is not...

Embodiment 3

[0034]Take 40kg of oily sludge from petrochemical enterprises, with an oil content of 12.3% and a water content of 80%, add 0.2kg of sodium hypochlorite and 12kg of calcium chloride, and mix and stir for 5 minutes; take 60kg of recycled fine aggregate, 10kg of cement, chlorine Calcium 12kg, ferrosilicon alloy 0.4kg, sodium sulfate 1.6kg, sodium chloride 0.4kg, gypsum 0.25kg, sodium nitrite 0.2kg, calcium lignosulfonate 0.4kg, naphthalene superplasticizer 0.1kg through the automatic feeding system Enter the mixing mixer and stir evenly for 20 minutes; the mixture is made into a non-fired hollow brick with a specification of 390mm*190mm*190*mm under a pressure of 25MPa, and the finished product is made after natural curing for 20 days.

[0035] The average compressive strength of 5 unfired hollow bricks prepared by testing 5 pieces is 11.58Mpa, the flexural strength is 7.13Mpa, the relative moisture content is 19.7%, and the water surface drop height of the three bricks is not mo...

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Abstract

The invention relates to a method for producing an environment-friendly baking-free hollow brick from oil-containing sludge and construction wastes, which comprises the following step: by taking oil-containing sludge, construction wastes, calcium chloride and cement as main raw materials, adding deodorizer, foaming agent, sodium sulfate, sodium chloride, gypsum, sodium nitrate, calcium lignosulfonate, naphthalene high-efficiency water reducing agent and other additional reagents to perform deodorization, heavy metal removal and curing treatment on the raw materials, thus preparing the environment-friendly baking-free hollow brick. According to the invention, the problem on the harmless, recycling and minimization treatment of oil-containing sludge and construction wastes is solved; the prepared environment-friendly baking-free hollow brick is high in strength, low in cost and favorable in sound insulation effect and causes no pollution, and the appearance quality, compression strength, relative water content, impermeability and freezing resistance conform to various indices. The resource utilization rate is increased on the one hand, and the landfill burden is reduced on the other hand, thus having predominant environmental benefits.

Description

technical field [0001] The invention relates to the technical field of resource utilization of industrial waste and environmental protection energy, and in particular provides a recycling, harmless and reduction treatment method for refractory oily sludge and construction waste. Background technique [0002] Oily sludge refers to the oily solid waste produced in the process of oil extraction, transportation, refining and oily sewage treatment. It is a hazardous waste and is usually disposed of in landfill; It is a general term for muck, waste concrete, waste masonry and other waste generated in the production activities of the construction industry such as repairs, and is usually disposed of by landfill or sea reclamation. On the one hand, it takes up a lot of land resources, and on the other hand, it may cause secondary pollution. [0003] At present, after sorting out valuables such as metal, wood, glass, etc. from construction waste, they are crushed to produce recycled ...

Claims

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Application Information

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IPC IPC(8): C04B38/02C04B28/00C04B18/30
CPCY02W30/91
Inventor 宋奎胜刘晶蔡钊荣王颖盖世男姜璐李新磊
Owner DALIAN DONGTAI INDAL WASTE TREATMENT
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