Abstract

The composition and properties of high-ash (A^d = 38.7%) KZh coal from the Borly field (Kazakhstan) are determined. On the basis of industrial experiments regarding the coking of Borly coal in a rotary furnace, a production technology is developed for moderate-temperature high-ash coke. The characteristics of the coke produced are as follows: W ^r = 2.0%; A^d = 47.3%; V ^daf = 4.8%; S^d = 0.36%; and P^d = 0.022%. It also contains 58.3% SiO₂, 28.4% Al₂O₃, and 3.3% Fe₂O. Its properties are as follows: reactivity with CO₂ at 1000°C \({{K}_{{{\text{C}}{{{\text{O}}}_{2}}}}}\) = 2.7 cm³/(g s); electrical resistivity ρ > 1.9 × 10⁶ Ω cm; porosity 29.8%; and structural strength S_st = 91.9%. High-ash coke may be used in the electrofurnace production of various ferroalloys.

中文翻译：

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用高灰哈萨克斯坦煤炭旋转窑生产焦炭，用于铁合金生产

摘要

确定了来自Borly油田（哈萨克斯坦）的高灰分（A ^d = 38.7％）KZh煤的成分和性能。根据有关旋转炉中焦煤的焦化的工业实验，开发了中温高灰分焦炭的生产技术。所产生的焦炭的特性如下：W  ^r＝ 2.0％；W ^r＝ 2.0％。A ^d＝ 47.3％。V  ^daf = 4.8％；S ^d = 0.36％；P ^d＝ 0.022％。它还包含58.3％的SiO ₂，28.4％的Al ₂ ö ₃，和3.3％的Fe ₂ O.它的性质如下：与CO的反应性₂ at 1000°C \（{{K} _ {{{\ text {C}} {{{\ text {O}}} _ {2}}}}} \） = 2.7 cm ³ /（gs）; 电阻率ρ> 1.9×10 ⁶ Ω厘米; 孔隙率29.8％；结构强度S _st＝ 91.9％。高灰分焦炭可用于各种铁合金的电炉生产中。