Copper slag treatment method, unfired water permeable material and manufacturing method of unfired water permeable material

A technology of processing method and manufacturing method, applied in the field of metallurgy, can solve problems such as high cost and complex process, and achieve the effect of low cost, simple process, and reduction of defects such as cracks

Active Publication Date: 2020-09-08
CHINA ENFI ENGINEERING CORPORATION
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0010] The main purpose of the present invention is to provide a treatment method for copper slag, a fire-free water-permeable material and its manufacturing method, so as to solve the problems of complicated process and high cost in the existing copper slag treatment method

Method used

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  • Copper slag treatment method, unfired water permeable material and manufacturing method of unfired water permeable material

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0046] Pour the copper slag tailings (temperature 1420°C) into the slag pit, cover and keep warm for 12 hours to cool it to 800°C, and the cooling rate between 650°C and 1100°C is 20°C / min.

[0047] Then use a bucket machine to dig out and crush the copper slag tailings, and screen to obtain tailings with a particle size of 3-4.75 mm, which will be stored as fine aggregate for later use.

[0048] Pour 42.5 grade ordinary Portland cement and water into the concrete mixer and mix for 2 minutes. After forming a uniform slurry, add the above fine aggregate to the mixer and mix for 3 minutes. During the period, according to the fluidity of the mixture, add a certain amount of The amount of water reducer continued to stir for 1 to 2 minutes. The total ingredients are aggregate by weight: cement: water = 12:4:1.

[0049] After the mixture is evenly stirred, pour it into the inside and the size of the oil film is 200×100×60mm 3 Then put the mold on the vibrating platform and vibrate...

Embodiment 2

[0051] Pour the secondary smelted copper slag tailings (temperature 1380°C) into the slag bag, and cool it down to 760°C after natural cooling for 24 hours. The cooling rate between 650°C and 1100°C is 12°C / min .

[0052] Then the copper slag tailings are crushed, and the sieved tailings aggregates with a particle size of 5-10 mm are stored for later use.

[0053] Pour 42.5 grade slag cement, water, and red iron oxide into the concrete mixer and stir for 2 minutes. After forming a uniform slurry, add coarse aggregate to the mixer and stir for 3 minutes. During the period, according to the fluidity of the mixture, add a certain amount of The amount of water reducer continued to stir for 1 to 2 minutes. The total ingredients are calculated in parts by weight as aggregate: cement: water: red iron oxide = 20:5:1:0.05.

[0054] After the mixture is evenly stirred, pour it into the inside and the size of the oil film is 200×100×60mm 3 Then put the mold on the vibrating platform a...

Embodiment 3

[0056] Pour the secondary smelted copper slag tailings (temperature 1490°C) into the slag basin, and let it cool down to 820°C after natural cooling for 15 hours. The cooling rate between 650°C and 1100°C is 25°C / min .

[0057] Then, the copper slag tailings are crushed and screened to obtain fine aggregates with a particle size of 2.4-4.75 mm and coarse aggregates with a particle size of 4.76-10 mm, which are stored separately for later use.

[0058] Pour 42.5-grade composite Portland cement, water, and iron oxide yellow into the concrete mixer and stir for 2 minutes. After forming a uniform slurry, add fine aggregate to the mixer and stir for 3 minutes. During the period, according to the fluidity of the mixture, Then add the water reducer and continue to stir for 1-2 minutes to obtain a yellow mixture. The total ingredients are calculated in parts by weight as aggregate: cement: water: yellow iron oxide = 16:5:1:0.07.

[0059] Pour 42.5-grade composite Portland cement and...

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Abstract

The invention provides a copper slag treatment method, an unfired permeable material and a manufacturing method of the unfired permeable material. The treatment method comprises the steps that the copper slag is subjected to reduction smelting, and valuable metal and reduction slag are obtained; and after the molten slag is cooled to 200-300 DEG C, tailings are obtained, and the cooling rate of the tailings between 650 DEG C and 1100 DEG C is smaller than or equal to 50 DEG C/min; after the copper slag is subjected to the secondary reduction smelting process, the temperature of the reduction slag is generally 1400 DEG C or above; and after the reduction slag is discharged, the reduction slag is slowly cooled at a specific cooling rate so that the molten tailings can be fully crystallized.On one hand, the solidified tailings can be harder in texture, bubbles, pores, cracks and other defects in the tailings are reduced, on the other hand, the effect of solidifying and stabilizing residual heavy metal elements in the residual tailings can be achieved, and the situation that the residual heavy metal elements are leached and pollute a water source is prevented. The treatment method hasthe advantages of simple process, low cost, good environmental friendliness and the like.

Description

technical field [0001] The invention relates to the field of metallurgy, in particular to a method for processing copper slag, a fire-free water-permeable material and a manufacturing method thereof. Background technique [0002] Permeable pavement can regulate urban rainwater, green water, groundwater, river and lake water and other water resource environments, reduce the pressure on municipal drainage systems, and play a role in flood control and drainage. Permeable pavement can increase the ventilation of the atmosphere and underground, rely on the evaporation of water on the pavement surface, improve the heat exchange process between the road and the environment, adjust the urban surface temperature, improve the local climate, and then reduce the urban heat island effect, saving energy and water in the city is of great significance. Therefore, the development of low-cost, energy-saving, and harmless permeable materials has gradually become a hot spot. Among them, the di...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B5/00C04B18/14C04B20/02C04B20/04C04B28/04C22B5/02C22B7/04
CPCC04B5/00C04B20/04C04B20/026C04B18/141C04B28/04C22B7/04C22B5/02C04B2111/00017C04B2201/50C04B2111/00284C04B2103/302C04B14/308Y02W30/91
Inventor 代文彬郭亚光苟海鹏吕东
Owner CHINA ENFI ENGINEERING CORPORATION
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