Alumina solution refineries - I need help

[gandalf]

Can anyone explain to me why my 4 alumina solutions refineries do not operate at 100 % efficiency ? I got perfect input of water and bauxit and connect them to 2 aluminium scrap refineries . The water waste from the scrap refineries are sent to 3 wet concrete refineries and the silica from alumina solutions refineries are mixed with some xtra silica from raw quarts production to a perfect setup of foundries to make aluminun ingots. According to maths it should all add up, but still my alumina refineries do not operate at 100%. Please advice.

[Wolfgang]

Check where in the process there is the problem that holds stuff up. You seem to have some kind of bottleneck there.

[Jack-o-Lantern]

Check output...
Alumina refineries have two output, it slow down if one of them is congested. Make sure silica from refineries take priority in usage so it never fill up output...
Eventually consider an overflow buffer and send overflow somewhere

[Cake for Mumm-Ra]

Are you using valves to prevent water backflow? What about fluid buffers?

Sometimes it takes awhile for 100% efficient setup to reach max throughput

[Mister Fabulous]

Screenshots would help. You need to stare at GUI for the machines while they're running and find out why they're stopping. They're either short on something, or one of the outputs is backing up and you will need to trace which is happening.

For now there are some assumptions that have to be made. I'm assuming all base recipes for the aluminum. This means you need:

• 240 quartz -> 400 silica to mix with the 200 silica from the solution refineries, so 600
  
• 720 water in. 240 is excess from the scrap, but you're getting rid of it in wet concrete refineries which would need 300 @ 100%, so assuming you're bringing in at least 288 limestone, that part would be fine.
  
• 480 bauxite.
  
• 240 coal.

The question is how are you splitting everything up.
Do you have only mk 4 belts? If so it would be preferable to send 1 refineries scrap to 4 constructors for ingots. Same with the extra silica since the need is 600 total.
Are you using mk 2 pipes? Are you doing a group of 3 extractors to two alumina solution refineries? Are you sure all the pipes are mk 2?