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Spherical porous light haydite for treating waste water and its production method

A technology for wastewater treatment and lightweight ceramsite, which is applied in biological water/sewage treatment, water/sludge/sewage treatment, separation methods, etc., and can solve problems such as high density and pore distribution that are not suitable for water treatment

Inactive Publication Date: 2002-11-20
HUAQI ENVIRONMENT PROTECTION SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

By comparison, it can be found that although this technology can be used to produce porous ceramsite with fly ash as raw material, its density is high and the pore distribution is not suitable for water treatment. It is specially used as a filler for the manufacture of lightweight concrete

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0008] Clay, fly ash, steelmaking red mud and carbon powder are used as raw materials. The ratio is: clay 200g, fly ash 700g, steelmaking red mud 50g, carbon powder 50g. The production process is as follows:

[0009] 1. Add 200g of raw clay, 700g of fly ash, 50g of steelmaking red mud, and 50g of carbon powder into the mixing kettle for 20 minutes of mixing. Then add 200g of water for mixing and artificial granulation.

[0010] 2. Put the pellets into a sintering furnace with a temperature of 250°C, heat and dry for 60 minutes, and then heat up and sinter to create pores. When the temperature was raised to 1100°C, it was kept warm for 30 minutes.

[0011] 3. After the sintered ceramsite is out of the furnace, it is naturally cooled to room temperature.

Embodiment 2

[0012] The difference between Example 2 and Example 1 is that the amount of fly ash is reduced, the amount of carbon powder and steelmaking red mud is increased, and the amount of other raw materials and operating conditions remain unchanged. The difference between Example 3 and Example 1 is that the amount of clay is increased, and the steelmaking red mud is not used, and the rest remain unchanged. In Example 4, the pore-forming agent was changed from carbon powder to mica powder, and the amount of raw materials and operating conditions were unchanged, which was the same as in Example 1. The raw material proportions of Examples 1-4 are shown in Table 1, and the properties of the corresponding products are shown in Table 2.

[0013] Example

[0014] Example

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PUM

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Abstract

The present invention relates to a kind of spherical porous loight-ceramsite produced by using industrial waste slag, steel-smelting rod mud and flyash as main raw material, using clay as binding agent, adding proper quantity of pore-forming agent and adopting high-temp., sintering process. Said invention also provides its production method, and said product can be specially used as filtration material for water treatment. Its product quality is as follows: specific surface area is 4-10 sq.m / g, average pore size is 50-250 micrometers, apparent density is 1.40-1.80 g / cu.cm and its voidage is 30-40%.

Description

Technical field: [0001] The invention belongs to the technical field of wastewater treatment, and in particular relates to a spherical porous lightweight ceramsite produced by high-temperature sintering with industrial waste slag, steelmaking red mud and fly ash as main raw materials and a manufacturing method thereof. Background technique: [0002] At present, there are many methods for industrial and urban domestic sewage treatment, such as the combination of coagulation and chemical oxidation to treat printing and dyeing wastewater; the combination of coagulation and biological aeration to treat urban domestic sewage; the use of coagulation, biological aeration and activated carbon adsorption phase Combining the deep treatment of coking wastewater and the use of nitrification and denitrification biotechnology to treat high ammonia nitrogen and organic phosphorus wastewater. The above-mentioned environmental treatment technologies are widely used, and have also played a po...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01D39/06B01J20/10B01J20/30C02F3/10
CPCY02W10/10
Inventor 王健金鸣林魏林朱静
Owner HUAQI ENVIRONMENT PROTECTION SCI & TECH
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