partings have low concentrations of barium, hafnium, scandium, strontium, tantalum, thorium, uranium, and REEs; this along with the absence of an Eu negative anomaly suggests a non-volcanic origin for the partings. 98/01830 ## Understanding of the mechanism of coal transltion into a plastic state.
96/05779 Zeta potential of a subbituminous coal and its effect on particle agglomeration
- Publisher
- Elsevier Science
- Year
- 1996
- Weight
- 170 KB
- Volume
- 37
- Category
- Article
- ISSN
- 0140-6701
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โฆ Synopsis
A novel 3-step regenerative, high-temperature process for coal gas desulphurization using calcined limestone as a sorbent includes: (1) reaction of H,S with CaO (sulphidation), (2) partial oxidation with SO, in a second step to obtain CaSO, and S", and (3 k regeneration of the solid mixture of CaS and CaSO, to form CaO and S r, which are both reused in the first two steps. Elemental sulphur is the final product. Several sulphidation-oxidation regeneration cycles were carried out in a thermogravimetric analyzer using various caicined limestones. The results showed a constant absorption capacity of 30-50% from two cycles on.
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