Coke for furnace protection and production method thereof

A production method and coke technology, which are applied in the field of furnace protection coke with improved quality and the production field thereof, can solve the problems of unmentioned coke quality and high cost of technical solutions, and achieve the effects of simplified operation, low production cost and reduced production cost.

Inactive Publication Date: 2010-07-28
PANGANG GROUP VANADIUM TITANIUM & RESOURCES +3
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, since high-titanium slag is produced by smelting, generally, high-titanium slag is prepared by electrolytically reducing titanium-containing minerals such as vanadium-titanium magnetite concentrate or titanium concentrate in an electric

Method used

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  • Coke for furnace protection and production method thereof

Examples

Experimental program
Comparison scheme
Effect test

Example Embodiment

[0042] Example 1

[0043] Get the coal 400g of the ratio shown in Table 1 and the vanadium-titanium-magnetite concentrate 2g shown in Table 2, mix the two, and then put into the corundum crucible (Φ80mm×110mm), then use 3kg heavy objects to put the The coal was compacted for 5 minutes, the counterweight was removed and sealed, put into a muffle furnace (400mm×150mm×200mm) for dry distillation, the heating rate was 3°C / min, the temperature was raised to 950°C, the constant temperature was 150min, and the coke was taken out and quenched with water to obtain coke 321.6 g, Coke thermal reactivity (CRI) was measured to be 41.16%. The coke component contains by weight percentage: fixed carbon 88.42%, ash 10.14%, volatile matter 1.44%, S 0.60%. Contains 0.82% TiO by weight in the ash 2 , 3.28% TFe, 0.075% V 2 O 5 .

[0044] Compared with the comparative example 1, the thermal reactivity (CRI) of the coke is improved by 0.09 percentage points due to the increased proportion of va...

Example Embodiment

[0045] Example 2

[0046] Get the coal 400g of the proportion shown in Table 1 and the vanadium-titanium-magnetite concentrate 8g shown in Table 2, mix the two, and then put into the corundum crucible (Φ80mm × 110mm), then use 3kg heavy objects to put the The coal was compacted for 5 minutes, the counterweight was removed and sealed, put into a muffle furnace (400mm×150mm×200mm) for dry distillation, the heating rate was 8°C / min, the temperature was raised to 1050°C, the constant temperature was 60min, and the coke was taken out and quenched with water to obtain coke 326.4 g, Coke thermal reactivity (CRI) was measured to be 40.35%. The coke component contains by weight percentage: fixed carbon 85.76%, ash 12.96%, volatile matter 1.28%, S 0.52%. 2.25% TiO by weight in ash 2 , 8.56% TFe, 0.097% V 2 O 5 .

[0047] Compared with the comparative example 1, the coke's thermal reactivity (CRI) is improved by 0.90 percentage points due to the increased proportion of vanadium-tita...

Example Embodiment

[0048] Example 3

[0049] Get the coal 400g of the ratio shown in Table 1 and the vanadium-titanium-magnetite concentrate 9.5g shown in Table 2, mix the two, then put into a corundum crucible (Φ80mm×110mm), and then use a 3kg heavy object to put in the crucible. The coal was compacted for 5min, the counterweight was removed to seal, put into a muffle furnace (400mm×150mm×200mm) for dry distillation, the temperature was raised at a rate of 10°C / min, the temperature was raised to 1000°C, the temperature was kept constant for 150min, and the coke was taken out and quenched with water to obtain coke. 348g, and the measured thermal reactivity of coke was 40.67%. The coke composition in weight percentage is: fixed carbon 85.17%, ash 13.69%, volatile matter 1.14%, S 0.56%. 2.6% TiO by weight in ash 2 , 10.62% TFe, 0.098% V 2 O 5 .

[0050] Compared with the comparative example 1, the reactivity of the coke is improved by 0.58 percentage points because the proportion of vanadium-...

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Abstract

The invention provides a coke for furnace protection and a production method thereof. The coke for furnace protection comprises the following components in percentage by weight: 79-90% of fixed carbon, 9-18.5% of ash content, 0.55-1.5% of volatile and 0.45-1.0% of S, wherein the ash content comprises the following components in percentage by weight: 0.82-9.12% of TiO2 and 0.075-0.214% of V2O5. The coke of the invention has the characteristic of improving coke hot performance (namely the cold-to-hot reactivity of the coke (CRI)), has low production cost and can ensure long-term stable operation of a blast furnace while performing the action of protecting the furnace.

Description

technical field [0001] The invention relates to the technical field of iron and steel metallurgy, in particular to a coke for furnace protection with improved quality and a production method thereof. Background technique [0002] Coke is an important raw material for blast furnace smelting, and its functions include: heat source; reducing agent and carburizing agent; material column skeleton, etc. Due to the substantial increase in the price of coking coal in recent years, the price of coke has risen accordingly, and the price of coke has already occupied a large part of the cost of blast furnace smelting. Moreover, with the continuous improvement of blast furnace smelting intensity, the burning loss of blast furnace hearth increases, which affects the technical and economic indicators of blast furnace production to a certain extent, and also leads to coke quality related requirements (including hot state properties, cold state strength, etc. ) is increasing day by day. Th...

Claims

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Application Information

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IPC IPC(8): C10B57/06C21B5/00
Inventor 黄先佑蒋胜文永才舒文东
Owner PANGANG GROUP VANADIUM TITANIUM & RESOURCES
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