ASSESSMENT OF THE COAL RESOURCES OF THE KYRGYZ REPUBLIC:
COAL CHARACTER AND DISTRIBUTION, GEOLOGY, MINING, AND IMPORTANCE TO THE NATION'S FUTURE
USGS Open File Report 97-137A (English)
TABLE b-8 - SMOKELESS, WHOLE-COAL BRIQUET MANUFACTURING PROCESS
Major Equipment List and Preliminary Specifications (See Block Flow Diagram, Figure 1)
| Absorbent Clay Storage | Reinforced Concrete, vertical, cylindrical silo with capacity of 1,000 metric tons, with volume corresponding to the density of fine-particle bentonite clay. |
| Raw Coal Storage | (Note: If the plant is located adjacent to the mine producing the fine coal and depending on winter conditions, this equipment item could be deleted.) Reinforced Concrete, vertical, cylindrical silo with capacity of 6,000 tonnes, with volume corresponding to the bulk density of the fine coal by-product from mining. |
| Raw-Coal Pulverization | Conventional power plant pulverizer equipment, capable of pulverizing 813 T/D of raw coal combined with 100 T/D of broken briquetted coal to produce a pulverized coal distribution required by the recipe. If the feedstock is a lignitic coal, then the issue of drying will need to be resolved as discussed in the text of this annex. |
| Clay-Coal Mixing | Commercial equipment for dry mixing 913 T/D of pulverized coal with 143 T/D of bentonite clay, with a goal of approaching a uniform coating of the clay on the coal particles. |
| Additives Mixing | Commercial equipment for uniformly and thoroughly distributing 100 T/D of fresh water and 44 T/D of slaked lime (Ca(OH)2) into 1,056 T/D of the clay coal mix. If an oxidizer (e.g., potassium nitrate) is needed, this can be dissolved in the water beforehand. |
| Briquetting | Conventional Belgian-wheel briquetting press(es), capable of continuous operation to produce 1,150 T/D of pillow shaped briquets suited to the market needs. |
| Briquet Aftertreatment | Probably a shaft drying tower to reduce the moisture content of 1,000 T/D of briquets to improve ignitability by moisture removal and concomitant development of porosity. |
| Lime Storage | Reinforced concrete, vertical, cylindrical silo with capacity of 350 metric tons, with volume corresponding to density of fine-particle slaked lime. |
| Elevated Water Tank | Elevated steel tank with a capacity to hold 1,000 tonnes of fresh water at height for gravity feeding water to the process. |
| Miscellaneous | Conveyors, elevators, piping, measuring devices and other auxiliary equipment to complete the installations for commissioning. |
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