This only works in 1.4.2 - future updates give different centrifuge products.
Mostly to show my friends who play on my server so that I don't have to explain it 6 times, but also for anyone who's new to railcraft automation.
I present you with a railcraft setup for the automatic generation of gold, iron, tin and sulphur from 24MJ/t and 10EU/t.
Suggested power setup - a 12L steam boiler with 3 industrial steam engines on it would power the MJ side of this setup perfectly. for the 10 EU/t I would probably have it hooked into my biofuel generator or steam power generating networks - or if you can afford 2 of the solar panels that give 8 each, you could use those.
total cost minus power generation:
-4 standard rails
-10 elevator rails
-12 booster rails
-10 boarding rails
-12 redstone torches (replaceable with levers)
-1 lever (turn it on and off :3)
-1 Chest Cart
-5 Item Unloaders
-4 Item Loaders
-1 Igneous Extruder
-1 Magma Crucible
-1 Liquid Transposer
-2 industrial centrifuges
-2 copper chests
-1 redstone engine
-1 auto crafting table
-1 wooden pipe
-1 output chest - I chose a diamond one.
-64 empty cells to start everything off, or the tin to make 64 cells.
Overview:
The cart runs counter-clockwise from this angle. starting from the right and going left you should see the extruder, crucible, transposer, 2 centrifuges, a chest attached to an autocrafter attached to a pipe attached to a chest, and the output chest at the very end. When the cart is on top of the loop it's filling machines, when it's on the bottom it is receiving goods. The single cart acts as a shared inventory as it moves between all the machines and distributes exactly what each machine wants as quickly as it can. Boarding tracks only push a cart forward when they have a redstone signal. Loaders and Unloaders release a signal when they can no longer move objects to or from the cart, so you can just put boarding tracks on top of unloaders and underneath unloaders to work as automatic stations.
The booster tracks are to prevent a cart from stalling on a laggy server. The placement of the right most torch (the one on the right elevator track) is important, it must be 1 level below the top track in order for the elevator to work properly.
There is a somewhat hidden boarding track underneath the energy conduit on the right on the lower portion of the track. This is attached to a lever which pulls on and off to start and stop the minecart. Good for checking the contents of the minecart or for pausing the process to save power. You can put this boarding track in any position in the loop as long as it's got room for a lever.
Centrifuges do not output through the bottom, so we have to draw from the sides. The broken track is fine, the boarding track pushes the cart over the edge and it falls on the bottom track correctly.
I am not going to show the power generation picture, it's quite overkill. refer to the top of the page for power requirements.
So. Let's start with the machine setups. I've opened the Thermal Expansion Configuration tabs and will put notes below each picture, everything should be self explanatory.
The extruder:
Just needs 1 lava bucket and 1 water bucket to run forever. Set its orange output in the direction of the crucible.
The crucible:
Will take 20 MJ/tick and melt stone into lava. Set input from the extruder and output to the transposer.
The transposer:
The Item unloader on top of the crucible looks like this -> Transfer as many tin cells as you can into the transposer.
Make sure to set the inputs for the transposer from the magma crucible and the item unloader. set it to output to the item loader.
Item loader on the transposer is set to grab as many lava cells as it can.
The 2 Centrifuges:
The top unloader is set to grab as much lava as possible.
The bottom loader is set to grab as much of the output as possible - the output is Tin, Gold Ingots, Wolfram Cells, and Pyrite Dust. Please note this is important - the name of the tin is Tin. It is not a "Tin Ingot" you must use the item named "Tin" or the centrifuge will not run. An easy way to make sure you're using the right item is to run the centrifuge manually once, and then take the tin that it spits out and use it to program the loader.
The unloader on top of the second centrifuge is set to fill it with as much pyrite as possible.
The loader on the bottom is set to grab as much iron dust and sulphur as possible.
The Automatic Crafting Table!
Remember, the loaders and unloaders don't properly interact with autmatic crafting tables, so you have to have a chest for input and a pipe/pump drawing crafted items into an output chest. The loader and unloader only interact with the input/output chests. Come to think of it, you could use the same chest for both things - I have kept them separate in this setup though.
Again - this tin ingot is just named "Tin". If you use an item called "Tin Ingot" then this unloader will not pull anything. Use the tin from the centrifuge. Also, instruct it to only grab 4 tin per pass instead of 64. The lava centrifuge produces more tin than is required for the lava cells, the ratio is 5 output for 4 input. We are going to route 4 of the output back into the system and save the 1 output in our final chest.
Use the same "Tin" to make the tin cells.
Ask your loader to grab all the output from the autocrafting table and put it back into the system.
Finally! The Output Chest!
Grab all gold, all sulphur, all iron, all wolfram, and 1 Tin (again, make sure it's the proper tin) every passby. You can now route this output chest to an ender chest or do whatever you want with it.
So that's the setup. Please inform me if you find any errors
PS: I am very aware that the bottleneck in this system is actually the magma crucible and not the centrifuge. I decided against having 2 magma cruicbles because it would draw 44 MJ per tick instead of 24 and it would not give an equal gain in tin generation. 1 crucible already produces 3 stacks of tin a day, 1.5 stacks of gold a day and 4 stacks of iron a day. for perspective this is enough to be able to afford replacing all cobblestone waterproof pipes in your base with gold after around a days wait, and constantly supplying the iron needed for replacing 5 steam turbine rotors at 100% output forever - granted you mine enough coal (turtles, quarry, stevescarts, IC miner, etc).
My base currently doesn't run much IC2 so I'm not sure on how much tin I would use constantly. Perhaps you would find the extra 20MJ/t is a good thing to spend to boost tin output. In order to do this, create another igneous extruder and attach it to another powered crucible that feeds into the same liquid transposer - there is space to fit it off to the side.
Mostly to show my friends who play on my server so that I don't have to explain it 6 times, but also for anyone who's new to railcraft automation.
I present you with a railcraft setup for the automatic generation of gold, iron, tin and sulphur from 24MJ/t and 10EU/t.
Suggested power setup - a 12L steam boiler with 3 industrial steam engines on it would power the MJ side of this setup perfectly. for the 10 EU/t I would probably have it hooked into my biofuel generator or steam power generating networks - or if you can afford 2 of the solar panels that give 8 each, you could use those.
total cost minus power generation:
-4 standard rails
-10 elevator rails
-12 booster rails
-10 boarding rails
-12 redstone torches (replaceable with levers)
-1 lever (turn it on and off :3)
-1 Chest Cart
-5 Item Unloaders
-4 Item Loaders
-1 Igneous Extruder
-1 Magma Crucible
-1 Liquid Transposer
-2 industrial centrifuges
-2 copper chests
-1 redstone engine
-1 auto crafting table
-1 wooden pipe
-1 output chest - I chose a diamond one.
-64 empty cells to start everything off, or the tin to make 64 cells.
Overview:
The cart runs counter-clockwise from this angle. starting from the right and going left you should see the extruder, crucible, transposer, 2 centrifuges, a chest attached to an autocrafter attached to a pipe attached to a chest, and the output chest at the very end. When the cart is on top of the loop it's filling machines, when it's on the bottom it is receiving goods. The single cart acts as a shared inventory as it moves between all the machines and distributes exactly what each machine wants as quickly as it can. Boarding tracks only push a cart forward when they have a redstone signal. Loaders and Unloaders release a signal when they can no longer move objects to or from the cart, so you can just put boarding tracks on top of unloaders and underneath unloaders to work as automatic stations.
The booster tracks are to prevent a cart from stalling on a laggy server. The placement of the right most torch (the one on the right elevator track) is important, it must be 1 level below the top track in order for the elevator to work properly.
There is a somewhat hidden boarding track underneath the energy conduit on the right on the lower portion of the track. This is attached to a lever which pulls on and off to start and stop the minecart. Good for checking the contents of the minecart or for pausing the process to save power. You can put this boarding track in any position in the loop as long as it's got room for a lever.
Centrifuges do not output through the bottom, so we have to draw from the sides. The broken track is fine, the boarding track pushes the cart over the edge and it falls on the bottom track correctly.
I am not going to show the power generation picture, it's quite overkill. refer to the top of the page for power requirements.
So. Let's start with the machine setups. I've opened the Thermal Expansion Configuration tabs and will put notes below each picture, everything should be self explanatory.
The extruder:
Just needs 1 lava bucket and 1 water bucket to run forever. Set its orange output in the direction of the crucible.
The crucible:
Will take 20 MJ/tick and melt stone into lava. Set input from the extruder and output to the transposer.
The transposer:
The Item unloader on top of the crucible looks like this -> Transfer as many tin cells as you can into the transposer.
Make sure to set the inputs for the transposer from the magma crucible and the item unloader. set it to output to the item loader.
Item loader on the transposer is set to grab as many lava cells as it can.
The 2 Centrifuges:
The top unloader is set to grab as much lava as possible.
The bottom loader is set to grab as much of the output as possible - the output is Tin, Gold Ingots, Wolfram Cells, and Pyrite Dust. Please note this is important - the name of the tin is Tin. It is not a "Tin Ingot" you must use the item named "Tin" or the centrifuge will not run. An easy way to make sure you're using the right item is to run the centrifuge manually once, and then take the tin that it spits out and use it to program the loader.
The unloader on top of the second centrifuge is set to fill it with as much pyrite as possible.
The loader on the bottom is set to grab as much iron dust and sulphur as possible.
The Automatic Crafting Table!
Remember, the loaders and unloaders don't properly interact with autmatic crafting tables, so you have to have a chest for input and a pipe/pump drawing crafted items into an output chest. The loader and unloader only interact with the input/output chests. Come to think of it, you could use the same chest for both things - I have kept them separate in this setup though.
Again - this tin ingot is just named "Tin". If you use an item called "Tin Ingot" then this unloader will not pull anything. Use the tin from the centrifuge. Also, instruct it to only grab 4 tin per pass instead of 64. The lava centrifuge produces more tin than is required for the lava cells, the ratio is 5 output for 4 input. We are going to route 4 of the output back into the system and save the 1 output in our final chest.
Use the same "Tin" to make the tin cells.
Ask your loader to grab all the output from the autocrafting table and put it back into the system.
Finally! The Output Chest!
Grab all gold, all sulphur, all iron, all wolfram, and 1 Tin (again, make sure it's the proper tin) every passby. You can now route this output chest to an ender chest or do whatever you want with it.
So that's the setup. Please inform me if you find any errors
PS: I am very aware that the bottleneck in this system is actually the magma crucible and not the centrifuge. I decided against having 2 magma cruicbles because it would draw 44 MJ per tick instead of 24 and it would not give an equal gain in tin generation. 1 crucible already produces 3 stacks of tin a day, 1.5 stacks of gold a day and 4 stacks of iron a day. for perspective this is enough to be able to afford replacing all cobblestone waterproof pipes in your base with gold after around a days wait, and constantly supplying the iron needed for replacing 5 steam turbine rotors at 100% output forever - granted you mine enough coal (turtles, quarry, stevescarts, IC miner, etc).
My base currently doesn't run much IC2 so I'm not sure on how much tin I would use constantly. Perhaps you would find the extra 20MJ/t is a good thing to spend to boost tin output. In order to do this, create another igneous extruder and attach it to another powered crucible that feeds into the same liquid transposer - there is space to fit it off to the side.