Coke with excellent thermal property and preparation method of coke

Abstract

The invention discloses coke with excellent thermal property and a preparation method. The coke with the excellent thermal property is formed by coking mixed coal, wherein the mixed coal is prepared from the following components in parts by weight: 45 to 55 parts of one-third coke, 10 to 20 parts of meager-lean coal, 15 to 25 parts of coking coal, 3 to 8 parts of blended coal and 10 to 15 parts offat coal. The coke with the excellent property, disclosed by the invention, has the beneficial effects of low reactivity and high strength after reaction.

Description

technical field

[0001] The invention relates to coke, in particular to a coke with excellent thermal properties and a preparation method thereof. Background technique

[0002] Coal chemical industry refers to the process of using coal as raw material and converting coal into gas, liquid and solid fuels and chemicals through chemical processing, mainly including coal gasification, liquefaction, dry distillation, tar processing and calcium carbide acetylene processing. Among them, the main product obtained from coal dry distillation is coke. An important use of coke is blast furnace ironmaking in the steel industry. According to the coke's ash content, sulfur content, mechanical strength, reactivity and post-reaction strength and other indicators, coke is divided into primary coke, secondary coke and tertiary coke.

[0003] The Chinese patent with publication number CN104694145A discloses a kind of coke and coking method equipped with Indonesian gas coal. The coke is made b...

Examples

preparation example Construction

[0047] A method for preparing coke with excellent thermal properties, comprising the steps of:

[0048] Step 1: Weigh 1 / 3 coking coal, lean coal, main coking coal, mixed coal, fat coal, boric acid, borax, boron oxide, titanium boride, titanium dioxide, pitch, petroleum coke, tar residue, polypropylene according to parts by weight , aluminum fluoride and yttrium chloride;

[0049] Step 2: First mix 1 / 3 coking coal, lean coal, main coking coal, mixed coal and fat coal, then crush, then add boric acid, borax, boron oxide, titanium boride, titanium dioxide, pitch, petroleum coke, tar Slag, polypropylene, aluminum fluoride and yttrium chloride are stamped, and then carbonized and coked. The coking temperature is 950-1050 ° C, and the coking time is 18-20 hours to obtain red coke;

[0050] Step 3: adding quenching water to the red coke to quench the coke, and drying to obtain coke after quenching.

[0051] Table 2. Parameter table of preparation method of coke with excellent therm...

Embodiment 3

[0098] Example 3 is superior to Comparative Examples 2 and 3 in terms of reactivity, post-reaction strength, ash content, sulfur content, crushing strength and abrasion resistance.

[0099] Comparative Example 4 is inferior to Comparative Examples 2 and 3 in both indicators of reactivity and post-reaction strength. It can be seen that both yttrium chloride and aluminum fluoride can reduce the reactivity and improve the strength after reaction. However, the combined use of yttrium chloride and aluminum fluoride leads to a reduction in reactivity and an increase in post-reaction strength greater than the sum of the reduction in reactivity and the increase in post-reaction strength caused by the separate use of yttrium chloride and aluminum fluoride . Therefore, yttrium chloride and aluminum fluoride can produce complex effect in the present invention, increase the reduction degree of reactivity and the improvement degree of strength after reaction.

[0100] Comparative Example...

technical field

[0001] The invention relates to coke, in particular to a coke with excellent thermal properties and a preparation method thereof. Background technique

[0002] Coal chemical industry refers to the process of using coal as raw material and converting coal into gas, liquid and solid fuels and chemicals through chemical processing, mainly including coal gasification, liquefaction, dry distillation, tar processing and calcium carbide acetylene processing. Among them, the main product obtained from coal dry distillation is coke. An important use of coke is blast furnace ironmaking in the steel industry. According to the coke's ash content, sulfur content, mechanical strength, reactivity and post-reaction strength and other indicators, coke is divided into primary coke, secondary coke and tertiary coke.

[0003] The Chinese patent with publication number CN104694145A discloses a kind of coke and coking method equipped with Indonesian gas coal. The coke is made b...

Examples

preparation example Construction

[0047] A method for preparing coke with excellent thermal properties, comprising the steps of:

[0048] Step 1: Weigh 1 / 3 coking coal, lean coal, main coking coal, mixed coal, fat coal, boric acid, borax, boron oxide, titanium boride, titanium dioxide, pitch, petroleum coke, tar residue, polypropylene according to parts by weight , aluminum fluoride and yttrium chloride;

[0049] Step 2: First mix 1 / 3 coking coal, lean coal, main coking coal, mixed coal and fat coal, then crush, then add boric acid, borax, boron oxide, titanium boride, titanium dioxide, pitch, petroleum coke, tar Slag, polypropylene, aluminum fluoride and yttrium chloride are stamped, and then carbonized and coked. The coking temperature is 950-1050 ° C, and the coking time is 18-20 hours to obtain red coke;

[0050] Step 3: adding quenching water to the red coke to quench the coke, and drying to obtain coke after quenching.

[0051] Table 2. Parameter table of preparation method of coke with excellent therm...

Embodiment 3

[0098] Example 3 is superior to Comparative Examples 2 and 3 in terms of reactivity, post-reaction strength, ash content, sulfur content, crushing strength and abrasion resistance.

[0099] Comparative Example 4 is inferior to Comparative Examples 2 and 3 in both indicators of reactivity and post-reaction strength. It can be seen that both yttrium chloride and aluminum fluoride can reduce the reactivity and improve the strength after reaction. However, the combined use of yttrium chloride and aluminum fluoride leads to a reduction in reactivity and an increase in post-reaction strength greater than the sum of the reduction in reactivity and the increase in post-reaction strength caused by the separate use of yttrium chloride and aluminum fluoride . Therefore, yttrium chloride and aluminum fluoride can produce complex effect in the present invention, increase the reduction degree of reactivity and the improvement degree of strength after reaction.

[0100] Comparative Example...