ZKSJECO
Inside the solidification workshop: the long inclined belt runs up to the mixing tower Photo

Projects / Xinjiang, China

A 3000 L line for hazardous waste in bulk bags

Xinjiang, Chinasolid waste stabilization site
3000 Ltwin-shaft mixer
32 mfrom bag hopper to cement silo

The job

Bulk bags in at one end, treated waste out at the other

Hazardous waste arrives in bulk bags and has to be mixed to a recipe with fly ash, cement, chelating agent and water. This line puts bag opening, feeding, weighing, mixing and discharge in one straight run inside the solidification workshop, with the control room alongside.

The layout

32 metres, from bag hopper to cement silo

Elevation of the line: bag-opening hopper, inclined feed belt, mixing tower and cement silo, 32.3 m overall
Elevation, redrawn from our general-arrangement drawing · 32.3 m overall
  1. 2Main tower steel structure
  2. 3Powder weigh hopper
  3. 4Waste weigh hopper
  4. 5Water scale
  5. 6Chelating agent scale
  6. 7Bulk bag hoist
  7. 8Discharge hopper
  8. 9Cement silo
  9. 10Bag-opening hopper
  10. 11Chelating agent storage
  11. 12Feed belt conveyor
  12. 13Water storage
  13. 14Discharge belt conveyor
  14. 15Fly ash feeding system
Plan of the solidification workshop: 14.1 m wide, with the reagent and water tanks outside the wall and the control room alongside
Plan: the workshop is 14.1 m wide; reagent and water tanks sit outside the wall, the control room alongside

How a batch runs

Dust extraction at every transfer point

  1. 01Bulk bag hoisted and opened
  2. 02Feed belt up to the tower
  3. 03Waste, ash and cement weighed
  4. 04Reagent and water weighed
  5. 05Mixed in the 3000 L mixer
  6. 06Discharge belt or bulk bags
Material flowDust extraction

On video

On this site: a bulk bag hoisted into the station
Stair tower and inclined belt inside the solidification workshop
Stair tower and inclined belt inside the solidification workshop
The 3000 L twin-shaft mixer above its discharge pit
The 3000 L twin-shaft mixer above its discharge pit
Treated material discharged into bulk bags
Treated material discharged into bulk bags
Reagent tanks, pumps and piping
Reagent tanks, pumps and piping
Platforms and guard rails around the mixer
Platforms and guard rails around the mixer
Feed belt running up from the bag station
Feed belt running up from the bag station

Photos and drawings are from this project. Drawings are redrawn from our general-arrangement drawings.

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