Just curious, but if you can issue such a detailed specification why are you not producing this equipment yourselves from a local sub-contractor ■

Originally Posted by intsys

We require equipments as specified below;

Enquiry – Equipments for Sand Handling

1) Box Feeder / Weighing Belt Feeder

1 No. Sand & Aggregates weighing hopper volume capacity 5 M. (max. weighing capacity for each component = 2000 kg.), Rubber profile bars bolted on the bottom part of the hopper.

- Weighing belt conveyor (reversible) 9.5 mts. long, with 1000 mm wide rubber belt, driven by rubber coated drum with shaft mounted gearbox and 11 KW electric motor.

- Electric and pneumatic panel, containing pneumatic valves and electrical terminals.

- Load cells, 5T capacity 4 Nos. with mounting accessories, digital display with analog output and Junction Box.

The scale resolution is 1 kg with a weighing accuracy of ± 0.5%

2)Aggregate Extraction conveyor 1 Set

for feeding sands and aggregate to the Skip hoist

Extracting belt conveyor inclined at 5°,capacity 430 m/hr., 3.5 mts. long, with 1.000 mm wide 3 plies rubber belt class 400, driven by rubber coated drum with shaft mounted gearbox and electric motor of 7.5 KW capacity ; hot dip galvanized rollers and frame; rubber bar belt cleaner.

Conveyor chute at the inlet point.

3)Sand & Aggregate Loading Skip Hoist

1 No. Sand & Aggregates loading skip with bucket 1500 lts. capacity running on six steel wheels, driven by a double rope winch having a electric brake motor of 15 Kw capacity; 24 mts / min lifting and lowering bucket speed; electric limit switches on low-high-extra high bucket positions; slow rope alarm system. Reinforced type skip rails, for 6 mts distance between supports. (length 13 mts.)

Painting :

Preparation : Sand or Grit Blasted to S.A 2.5

Primer : Epoxy primer in two components. Nominal DFT 50+50 Microns .

Colour : Off white. RAL 9002

External : The Cement Silos- PU Paint in two components. Nominal DFT 40+40 Microns

Internal : Epoxy paint in two Components

To be supplied to : Mumbai

Contact Person: Vijay Nikam (Cell: ++919769493915)

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Are you seeking to bag sand mix and aggregate mix cements for sale? If this is the case you are making more work than is necessary.

If you are looking to build a cement batch plant you need help with your specifications.

Why do you require(desire) a double drum tugger hoist for this specification?

A silo loading system can be done much more easily with currently available equipments for sale today

This point is both curious and disturbing as your specification will require contacting a mining equipment stockist. Position sensors for skip hoists are magnetic and if you are simply loading silos for cement bagging it would be prohibitive.

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Your requirement is very confusing simply because it is incomplete; if you desire to load cement silos with sand and aggregates it is easliy accomplished with a pair of sturdy bucket elevators.

You will be much better off purchasing a complete cement mixing batch plant that will have every thing you need with none of the things you do not need which are in your specification.

If we new more about what you are doing or want to accomplish with this it would be helpful but from what you have provided a simple concrete batch plant to mix and bag isand mix and stone mix aggregate cements is all you really want from what I am interpreting.

lzaharis ■

What you want to do is easily accomplished wih a small batching plant that is currently available for sale today with no problematic items like a double drum skip hoist, giude rails, speed sensors for the tugger hoist etc.

A completely fabricated very small cement batch plant fed with a pair of bucket elevators or a paired pneumatic delivery system or one or a pair Dos Santos Inc. Snake Belts feeding your hoppers will do the job easily.

Most batching plants are set up for pneumatic delivery of aggregates to the hoppers anyway and what you wish to do is counterproductive and really not at all cost effective to assemble and maintain when a simpler method exists

If you are going to bag a fine aggregate mix, a sand mix or Pozzolana and plaster an open mouth bagging system and bag sewing system for triple wall paper bags is the simplest way to go and it will be much less expensive and less trouble than a counter balanced hoisting system for that short an incline and distance.

A counter balanced hoisting system requires much more material for guides, and steelwork than you have provided in your posting here- a simple short incline ramp with rails is not going to work properly as the wheeled carriers will yo yo-(bounce) when being lowered as the cables will whip from the wide fleet angle due to the required distance from the hoist to pay out cable and use cable roller guides to maintain the cable in a single pathway on the roller guides.

A new small double drum tugger hoist using the Alimak brand for example will cost more than a very small batching plant and single bagging line.

If you contact one of the cement manufacturing associations in Europe or the USA or Japan they will help you obtain everything you need and do it effectively and very simply implementing a dilute phase pneumatic delivery system for the aggregates and sand as well as cement.

lzaharis ■