A kind of fuel for sintering batching and adding method thereof

Abstract

The invention provides fuel for sintering ingredients and an adding method of the fuel. According to the fuel for the sintering ingredients, one of semi-coke and CDQ powder is used, or a mixture of the semi-coke and the CDQ powder is used, and in use, the mixture comprises 40-80% wt% of the semi-coke and 20-60% of the CDQ powder. The fuel is put into a fuel bin of an ingredient workshop and put onto a belt through a disc feeder; the fuel is evenly mixed with other kinds of ore and a fusing agent through a primary mixing machine and a secondary mixing machine; then the mixed material is put on a sintering trolley through a distribution device, and sintering production of the mixed ore is conducted; and the adding amount of the fuel in the mixed material is worked out according to the formula of RL=K1+QT*K2+YHG*K3+EYHG*K4+SF*K5+GD*K. By the adoption of the fuel, the fuel dosage can be adjusted flexibly according to the different core conditions during sintering, mixing and bending, so that the carbon blending cost per ton of the mixed ore is lowered by over RMB 1 yuan, the low cost of the ore blending for sintering is achieved, and the quality of the sintered ore can be improved effectively.

Description

technical field

[0001] The invention belongs to the technical field of sintering, and in particular relates to a sintering mixture using semi-coke and CDQ powder as fuel and a adding method thereof. Background technique

[0002] Sintering ore blending technology is a technology widely used by iron and steel enterprises at home and abroad. Sintering ore blending can not only make full use of the advantages and disadvantages of different ores, improve the microscopic composition of sintered ore, thereby improving its metallurgical properties, but also broaden the scope of ore use and improve the finished product. Sinter quality. At the same time, the most important thing is to greatly reduce the cost of ore blending, especially in today's increasingly scarce high-quality ore, the use of ore blending technology is of great significance to steel plants. At the same time, different substances between ores react and recombine to form finished sintered ore. Since it needs to be ca...

Examples

Embodiment 1

[0024] Applied to 120m 2 Sintering machine, the fuel for sintering batching is single semi-coke, the carbon content of semi-coke is 60wt%, the ash content is 25wt%; the semi-coke is used as fuel, put into the fuel bin of batching workshop, and put into the belt through the disc feeder Above, it is mixed with other kinds of ores and flux through the primary and secondary mixers, and arranged on the sintering trolley through the distributor to carry out the sintering production of the mixed ore. %, silicon dioxide is 5.6wt%, moisture is 8.5wt%, material layer height is 0.65m, RL=-4.0+0.55×23+0.112×0.5+0.056×(-0.1)+0.085×(-0.1)+0.65× (-5.0)=5.4419kg, that is, the fuel addition in every hundred kilograms of mixture is 5.44kg, and the results of use are shown in Table 1.

[0025] Table 1 120m 2 The effect of sintering machine

[0026]

[0027] Compared with the traditional comparative example 1 fuel blending technology, Example 1 flexibly adjusts the amount of fuel blended by...

Embodiment 2

[0029] Applied to 265m 2 Sintering machine, the fuel for sintering batching is single CDQ powder, the carbon content in CDQ powder is 75wt%, the ash content is 20wt%; CDQ powder is used as fuel, put into the fuel bin of batching workshop, and put into the belt through the disc feeder Above, it is mixed with other kinds of ores and flux through the primary and secondary mixers, and arranged on the sintering trolley through the distributor, and the sintering production of the mixed ore is carried out. The TFe content of the mixture is 56wt%, and the calcium oxide is 10.8wt %, silicon dioxide is 5.3wt%, moisture is 8.0wt%, material layer height is 0.68m, RL=-4.7+0.56×25+0.108×0.55+0.053×(-0.05)+0.08×(-0.05)+0.68× (-6.0)=5.27275kg, the fuel addition in every hundred kilograms of mixture is 5.27kg, and the use effect is shown in Table 2.

[0030] Table 2 265m 2 The effect of sintering machine

[0031]

[0032] Example 2 can reduce the fuel consumption per ton of mixed ore by ...

Embodiment 3

[0034] Applied to 328m 2Sintering machine, the fuel for sintering ingredients is a mixture of semi-coke and CDQ powder, wherein the proportion of semi-coke is 40wt%, the proportion of CDQ powder is 60wt%, the carbon content of semi-coke is 70%, and the ash content is 20%. The carbon content in the CDQ powder is 80wt%, and the ash content is 15wt%. Mix the two as fuel, put them into the fuel bin of the batching workshop, put them on the belt through the disc feeder, and pass through a process with other kinds of ores and flux once. , the secondary mixer is mixed, and arranged on the sintering trolley through the distributor, and the sintering production of the mixed ore is carried out, wherein the content of the mixed material TFe is 57wt%, calcium oxide is 10.5wt%, and silicon dioxide is 5.2wt%. Moisture content is 8.3wt%, material layer height is 0.72m, RL=-5.40+0.57×26+0.105×0.60+0.052×0.0+0.083×0.0+0.72×(-6.0), the fuel addition in every hundred kilograms of mixture is 5.1...

technical field

[0001] The invention belongs to the technical field of sintering, and in particular relates to a sintering mixture using semi-coke and CDQ powder as fuel and a adding method thereof. Background technique

[0002] Sintering ore blending technology is a technology widely used by iron and steel enterprises at home and abroad. Sintering ore blending can not only make full use of the advantages and disadvantages of different ores, improve the microscopic composition of sintered ore, thereby improving its metallurgical properties, but also broaden the scope of ore use and improve the finished product. Sinter quality. At the same time, the most important thing is to greatly reduce the cost of ore blending, especially in today's increasingly scarce high-quality ore, the use of ore blending technology is of great significance to steel plants. At the same time, different substances between ores react and recombine to form finished sintered ore. Since it needs to be ca...

Examples

Embodiment 1

[0024] Applied to 120m 2 Sintering machine, the fuel for sintering batching is single semi-coke, the carbon content of semi-coke is 60wt%, the ash content is 25wt%; the semi-coke is used as fuel, put into the fuel bin of batching workshop, and put into the belt through the disc feeder Above, it is mixed with other kinds of ores and flux through the primary and secondary mixers, and arranged on the sintering trolley through the distributor to carry out the sintering production of the mixed ore. %, silicon dioxide is 5.6wt%, moisture is 8.5wt%, material layer height is 0.65m, RL=-4.0+0.55×23+0.112×0.5+0.056×(-0.1)+0.085×(-0.1)+0.65× (-5.0)=5.4419kg, that is, the fuel addition in every hundred kilograms of mixture is 5.44kg, and the results of use are shown in Table 1.

[0025] Table 1 120m 2 The effect of sintering machine

[0026]

[0027] Compared with the traditional comparative example 1 fuel blending technology, Example 1 flexibly adjusts the amount of fuel blended by...

Embodiment 2

[0029] Applied to 265m 2 Sintering machine, the fuel for sintering batching is single CDQ powder, the carbon content in CDQ powder is 75wt%, the ash content is 20wt%; CDQ powder is used as fuel, put into the fuel bin of batching workshop, and put into the belt through the disc feeder Above, it is mixed with other kinds of ores and flux through the primary and secondary mixers, and arranged on the sintering trolley through the distributor, and the sintering production of the mixed ore is carried out. The TFe content of the mixture is 56wt%, and the calcium oxide is 10.8wt %, silicon dioxide is 5.3wt%, moisture is 8.0wt%, material layer height is 0.68m, RL=-4.7+0.56×25+0.108×0.55+0.053×(-0.05)+0.08×(-0.05)+0.68× (-6.0)=5.27275kg, the fuel addition in every hundred kilograms of mixture is 5.27kg, and the use effect is shown in Table 2.

[0030] Table 2 265m 2 The effect of sintering machine

[0031]

[0032] Example 2 can reduce the fuel consumption per ton of mixed ore by ...

Embodiment 3

[0034] Applied to 328m 2Sintering machine, the fuel for sintering ingredients is a mixture of semi-coke and CDQ powder, wherein the proportion of semi-coke is 40wt%, the proportion of CDQ powder is 60wt%, the carbon content of semi-coke is 70%, and the ash content is 20%. The carbon content in the CDQ powder is 80wt%, and the ash content is 15wt%. Mix the two as fuel, put them into the fuel bin of the batching workshop, put them on the belt through the disc feeder, and pass through a process with other kinds of ores and flux once. , the secondary mixer is mixed, and arranged on the sintering trolley through the distributor, and the sintering production of the mixed ore is carried out, wherein the content of the mixed material TFe is 57wt%, calcium oxide is 10.5wt%, and silicon dioxide is 5.2wt%. Moisture content is 8.3wt%, material layer height is 0.72m, RL=-5.40+0.57×26+0.105×0.60+0.052×0.0+0.083×0.0+0.72×(-6.0), the fuel addition in every hundred kilograms of mixture is 5.1...

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