re: Ann: 137 metre thick coal sequence inters...
Coking coal:
Bituminous coal must meet a set of criteria for use as coking coal, determined by particular coal assay techniques. These include moisture content, ash content, sulfur content, volatile content, tar, and plasticity. This blending is targeted at producing a coke of appropriate strength (generally measured by Coke strength after reaction (CSR), while losing an appropriate amount of mass. Other blending considerations include ensuring the coke doesn't swell too much during production and destroy the coke oven through excessive wall pressures.
The greater the volatile matter in coal, the more by-product can be produced. It is generally considered that levels of 26-29 percent of volatile matter in the coal blend is good for coking purposes. Thus different types of coal are proportionally blended to reach acceptable levels of volatility before the coking process begins.
The intital target announced on 1 July indicates:
"...thermal coal, Calorific value range Qdaf 6200 to 6800 kcal/kg1..."
I'm comparing this to CEOs announcement today and without speculating too much, looking forward to assay results.
TVN Price at posting:
5.9¢ Sentiment: LT Buy Disclosure: Held
