Agricultural Lime and Mills

[Dilkris]

Bit off the wall this one but I know there are some really knowledgeable guys on this forum who have helped me out before.
I am wanting to produce agricultural lime and poultry feed (sized 0-2, 0-3 and 0-5mm depending on customer requirements) at a rate of 10MT/hr from 0-40mm limestone.
I believe I need a simple system, feed hopper, vibratory feeder, mill, vibratory screen, dust control and packaging plant. (Should there be a cyclone in this flowchart somewhere instead of the secondary screen?)
Anyway my initial problem is whether the mill should be an Impact Crusher or a Hammer Crusher; I am of the understanding that a Hammer Crusher (Mill) has replaceable lower screen grids which are changed out according to the product size required. An Impact Crusher appears not to have this facility.
Am I right or just totally ill informed? I have tried to Google the subject and just became even more confused.

 

[wyn]

The hammer crushers tend to have replaceable bars rather than a mesh.
As you say an impact crusher would not have that type of secondary sizing. They would tend to have just 2 aprons to break the stone against. There was dust extraction at every step, screens encapsulated etc.

The lime spread on fields would quite often be the stuff that came from the dust extraction. It was called "filler" and acted more like a liquid.

 

[chunkolini]

Is there any subject that someone on this forum does not know some quality information about?

 

[daleyd]

Is there any subject that someone on this forum does not know some quality information about?

Welding seems a bit hit and miss.....

 

[Dilkris]

The hammer crushers tend to have replaceable bars rather than a mesh.
As you say an impact crusher would not have that type of secondary sizing. They would tend to have just 2 aprons to break the stone against. There was dust extraction at every step, screens encapsulated etc.

The lime spread on fields would quite often be the stuff that came from the dust extraction. It was called "filler" and acted more like a liquid.

Indeed you are correct - referred to as "Grid Bars" - offered in a variety of sizes.