Single Drum Rotary Dryer
Baichy has dispatched a 1.8 × 20 m single drum rotary dryer to a coal slime drying project in Kazakhstan. The dryer is built on the Φ1800 drum series and configured for the site's 230/400 V, 50 Hz supply.
What Was Shipped to Kazakhstan?
The shipment is one single-pass rotary dryer with a Φ1800 × 20000 mm drum for coal slime and washed coal, supplied as a complete drying system: drum, transmission and support devices, feeding and discharge, hot air, dust collection and sealing. A striking device is fitted because coal slime is adhesive.
Published Specifications of the Φ1800 Series
Baichy's English rotary dryer table stops at Φ1800 × 16000, so the capacity, drum volume and motor of the 20 m drum come from the signed technical annex rather than from this page.
| Spec. (Dia. × Length mm) | Volume (m³) | Capacity (t/h) | Main motor (kW) |
|---|---|---|---|
| Φ1800×12000 | 30.5 | 6.5–8.1 | 18.5 |
| Φ1800×14000 | 35.6 | 7.6–9.5 | 18.5 |
| Φ1800×16000 | 40.7 | 7.8–10.2 | 18.5 |
| Φ1800×20000 (as shipped) | 50.8 | 9-12.5 | 22 |
Cell values and range separators are as published by Baichy (read 2026-09-16); the headings are re-typeset. The same pages publish a maximum feed size of <10 mm, a motor band of 3–110 kW and a capacity band of 1–75 t/h across the full range — range-wide figures, not figures for the 20 m drum.
1.8x20M Single Cylinder Rotary Dryer Shipped To Kazakhstan
What Does a Kazakh Coal Site Change in the Specification?
Three published figures shape this order: the site's supply, its winter temperature, and the border the drum has to cross.
| Site condition | Published figure |
|---|---|
| Supply voltage and frequency | 230/400 V, 50 Hz |
| January mean daily minimum, Ekibastuz | −18.7 °C (record low −45.0 °C) |
| Rail gauge at the Chinese border | 1,520 mm vs 1,435 mm in China — break-of-gauge at Dostyk and Khorgas/Altynkol |
Coal slime is dried at ≤30% water content, at about 5–15 kWh per ton and a thermal efficiency of about 50%–60%, with a maximum inlet air temperature of 700–800 °C on the Φ1800 series. The cold-weather package and the drum section plan are confirmed on the technical annex.
FAQ: Coal Slime Drying in Kazakhstan
1. What is the drying capacity of a 1.8 × 20 m single drum rotary dryer?
Baichy publishes Φ1800 × 12000 at 6.5–8.1 t/h, Φ1800 × 14000 at 7.6–9.5 t/h and Φ1800 × 16000 at 7.8–10.2 t/h. The 20,000 mm length is not in that table, so the coal slime capacity for the Φ1800 × 20000 drum is confirmed on the signed technical annex.
2. What materials can this single drum rotary dryer handle?
Coal slime at a water content of ≤30%, washed coal and lignite-class coal, plus ore concentrates, quartz sand, clay, limestone, gypsum and slag across the same dryer range. Baichy lists high-viscosity sludge and heat-sensitive materials as unsuitable for a single drum rotary dryer.
3. Will a rotary dryer run through a Kazakh winter?
Ekibastuz records a January mean daily minimum of −18.7 °C and a record low of −45.0 °C. The dryer runs through that climate when the lubricant grade, sealing material and insulation are specified for the site's design temperature and the cold-start procedure is written for it; Baichy states all three on the technical annex.
4. How does a 20 m dryer drum reach a site in Kazakhstan?
Kazakhstan's railway runs on a 1,520 mm gauge against 1,435 mm in China, breaking gauge at Dostyk and Khorgas/Altynkol, so the 20 m drum ships in sections and is assembled on site. Section lengths, weights and the site crane requirement come with the shipping plan.
Baichy Heavy Industry
Baichy Heavy Industry is a high-tech mining equipment company integrating R&D, manufacturing, sales, and after-sales service. Focusing on crushing, grinding, and mineral processing equipment, we provide professional solutions to our customers. We are ISO9001:2015 、certified, and our products include mobile crushing palnts, crawler crushing plant, construction waste crushing plants, jaw crushers, sand making machines, cone crushers, fine crushers, grinding mills, ball mills, etc., all with reliable performance to meet diverse project needs.
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