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Process for preparing compound slag agent by silicon-manganese alloy fly ash

A technology of silicon-manganese alloy and composite slag agent is applied in the field of metallurgy, which can solve the problems of affecting process production and low comprehensive utilization efficiency, and achieve the effects of improving smelting effect, good environmental protection benefit and uniform composition.

Inactive Publication Date: 2018-06-05
GUIZHOU UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, these methods have problems such as low comprehensive utilization efficiency and affecting subsequent process production.
At present, there is no better way to deal with the dust, and some small ferroalloy enterprises can only deal with the unusable dust by stockpiling

Method used

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  • Process for preparing compound slag agent by silicon-manganese alloy fly ash
  • Process for preparing compound slag agent by silicon-manganese alloy fly ash
  • Process for preparing compound slag agent by silicon-manganese alloy fly ash

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] Embodiment 1: A kind of technology of silicon-manganese alloy dedusting dust preparation composite slag agent, the steps are as follows:

[0025] Raw material ratio: Portland cement is used as binder, and the addition amount is 2-6%; 2% of additives are added, and CaO is added to adjust the binary alkalinity of the mixture to 2;

[0026] Pelletizing: Use a disc pelletizing machine to pelletize, add 12% of the total amount of water, continue to roll for 15 minutes after the particle size reaches the requirement, and the particle size of the raw pellets is 12mm;

[0027] Pellet drying: place the pellets at room temperature to dry naturally for 24 hours, and then dry them in a muffle furnace at 250-300°C for 3 hours.

[0028] Finally, the compressive strength and drop strength of the dried pellets were tested, and the specific data are shown in Table 2.

Embodiment 2

[0029] Embodiment 2: A kind of technology of silicon-manganese alloy dedusting dust preparation composite slag agent, steps are as follows:

[0030] Raw material ratio: use bentonite as binder, the addition amount is 0.5%-2.5%; add 2% additives, add CaO to adjust the binary alkalinity of the mixture to 2;

[0031] Pelletizing: Use a disc pelletizing machine to pelletize, add 11% of the total amount of water, continue to roll for 10 minutes after the particle size reaches the requirement, and the particle size of the raw pellets is 12mm;

[0032] Drying of pellets: Place the pellets at room temperature to dry naturally for 28 hours, and dry in a heating furnace at 280-300°C for 3-4 hours.

[0033] Finally, the compressive strength and drop strength of the dried pellets were tested, and the specific data are shown in Table 3.

Embodiment 3

[0034] Embodiment 3: A kind of technology of silicon-manganese alloy dedusting dust preparation composite slag agent, the steps are as follows:

[0035] Raw material ratio: water glass is used as binder, and the addition amount is 2%-6%; 2% of additives are added, and CaO is added to adjust the binary alkalinity of the mixture to 2;

[0036] Pelletizing: Use a disc pelletizing machine to pelletize, add 10% of the total amount of water, continue to roll for 15 minutes after the particle size reaches the requirement, and the particle size of the raw pellets is 11mm;

[0037] Drying of pellets: Place the pellets at room temperature to dry naturally for 30 hours, and dry in the flue at 250-280°C for 3-4 hours.

[0038] Finally, the compressive strength and drop strength of the dried pellets were tested, and the specific data are shown in Table 4.

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Abstract

The invention discloses a process for preparing a compound slag agent by silicon-manganese alloy fly ash. The process comprises the following steps: (1) adding 0.5-6% of a binder and 0.5-5% of an additive by mass percent into silicon-manganese alloy fly ash, then adding CaO to regulate the binary basicity to be 1-3.5, and performing uniform mixing to obtain a product A; (2) adding water into the product A for pelletizing to obtain a product B; (3) placing the product B at normal temperature for drying for at least 24 h, and then performing drying for 2-4 h at 250-300 DEG C to obtain the compound slag agent. The obtained compound slag agent has the advantages of high strength, low melting point and appropriate viscosity, and has the characteristics that the recovery rate and the added valueof fly ash can be improved.

Description

technical field [0001] The invention relates to a process for preparing a composite slag agent from silicon-manganese alloy dedusting ash, which belongs to the field of metallurgy. Background technique [0002] Silicon-manganese alloy mainly contains three elements of Mn, Si and Fe, and also contains a small amount of carbon and other elements. It is an alloy with large output and wide application in ferroalloy production. Ordinary silicomanganese alloys are mainly used in converter steelmaking, and are often used as composite deoxidizers and alloying agents. High silicomanganese alloys are reducing agents for smelting and refining ferromanganese and metal manganese. In addition, manganese can also reduce the hot embrittlement of steel. Improve the mechanical properties of steel. During the production process of ferroalloy, solid waste such as dedusting ash will be produced. There are many types, large differences in composition, and fine particle size. They will be scatter...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C21C7/06C21C7/00C21C7/076C22B47/00
CPCC21C7/0006C21C7/06C21C7/076C22B47/00Y02P10/20
Inventor 唐道文陈亮管桂超晋克勤刘宪超
Owner GUIZHOU UNIV
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