User:Thrawcheld/Scrap yields

Yields per 1000 scrap

The following table lists the expected yield (rows) per 1000 scrap, if all possible recycling steps that could yield that item are performed.

• Direct yields are those obtained by recycling in only one step.
• Full process yields are those obtained by further recycling the direct products, assuming the maximum possible amount is recycled. Only items that have at least one recyclable yield have this column.

Full process yields will not usually be obtained in practice, since some intermediate recyclable items will be consumed instead of recycled. In particular, the yield of electronic circuits, copper plates, copper cables, and plastic is much lower when rockets are being constructed, since rocket construction consumes processing units and low density structures.

The table takes into account that each yield is rolled for independently, including for scrap.

The uses column includes only items that are useful on Fulgora and cannot be obtained directly from scrap.

Recycler yields per 1000 scrap

Yield	Input											Uses
	Scrap		Iron gear wheel	Concrete	Battery	Copper cable	Advanced circuit		Processing unit		Low density structure
	Direct	Full process					Direct	Full process	Direct	Full process
Advanced circuit	30	40							10	10		logistic chests modules beacon express splitter logistic robots roboport selector combinator substation
Battery	40	40										accumulator flying robot frame supercapacitor
Concrete	60	60										refined concrete rail ramps and supports electromagnetic plants paving rocket silo paving
Copper cable	30	98.75					30	41.25		27.5		combinators beacon programmable speaker lamp substation
Copper plate		109.375			10	15		20.625		13.75	50	superconductor
Electronic circuit		120					0.5	0.5	5	5.25		many useful items, notably: supercapacitor logistic chests combinators assembling machines beacons inserters chemical plants construction robots level 1 modules electric engines splitters flying robot frame locomotive programmable speaker signals repair pack lamp train stop
Holmium ore	10	10										holmium solution holmium plate lightning collector supercapacitor electromagnetic science pack Tesla gun Tesla ammo Tesla turret electrolyte electromagnetic plant mech armor supercapacitor superconductor Tesla gun fusion power cell (on Aquilo) lithium (on Aquilo) electromagnetic science pack
Ice	50	50										water refined concrete holmium solution cracking
Iron gear wheel	200	200										many things, none unique to Fulgora
Iron ore		1.5		1.5								nothing
Iron plate		140	100		10			3.75		26.25		accumulator assembling machine 1 cargo wagon inserters iron stick rail refined concrete train stop power poles programmable speaker pipes programmable speaker signals and train stop lamp yellow belts storage tank sulfuric acid
Low density structure	10	10										power armor mk2 mech armor some armour modules rocket part
Plastic bar		32.5					15	15		5	12.5	superconductor Tesla gun Tesla ammo
Processing unit	20	20										level 2/3 modules electromagnetic plant mech armor power armour mk2 (used in mech armor) recycler rocket part rocket silo
Solid fuel	70	70										rocket fuel rocket part fuelling trains
Steel plate	40	45									5	assembling machines empty barrel some armor modules beacon power poles and substation locomotive and wagons chemical plant engine flying robot frame pump rail, rail ramp, rail support, and train stop refined concrete roboport rocket silo chests storage tank recycler electromagnetic plant lightning rod and lightning collector
Stone	40	40										foundation rail holmium solution electrolyte
Stone brick		7.5		7.5								lightning rod paving

Observations

• You cannot make anything that requires coal (e.g. grenades for military science) except by importing coal (or importing carbon and synthesizing coal).
• Most green circuits come from recycling blue circuits, not red circuits.
• The number of units of water you can get out of scrap (without productivity) is about equal to the quantity of scrap. The amount of solid fuel you get is about 14 times less. If you wanted to use steam power for some reason, saturating one normal quality heat exchanger with a heating tower would therefore take 10.3 scrap per second, consuming 0.833.. solid fuel per second, a ratio of about 12:1. You therefore cannot get 100% efficiency out of heating towers while consuming all the solid fuel you get from scrap – you will consume all your ice in heat exchangers and overheat the towers.
• Iron ore is almost useless. The only thing you can do with it is smelt it for more iron plates (and you might as well burn solid fuel to do so), but you will probably get enough of those anyway from recycling gears. There's no point exporting it since it's equally available everywhere else. You might as well void it with a pair of recyclers.
• The only useful things that consume copper plates are superconductors, batteries, copper cables, and LDS. Other than superconductors, batteries seem like the most likely shortfall. Crafting more LDS would likely result in a large surplus of plastic (red circuits recycle to about equal amounts of copper and plastic, but LDS uses four times as much copper). You might also make red science on Fulgora.
• Superconductors are also the only thing you are likely to make in bulk that consumes plastic... unless you need more red circuits than you can get from scrap, which implies you're getting all your plastic from LDS and have a large surplus of copper. You will likely have a surplus of plastic, which could usefully be exported, probably to Aquilo which is the planet that has the most trouble making it (due to lack of coal).
• You will probably get more solid fuel than you can use. It's certainly not worth making it from the oil sands.

Processed scrap in terms of stacks

Recycling scrap produces the following numbers of stacks. The table lists expected numbers from 20,000 scrap, which is 400 stacks. This is the smallest quantity that produces whole numbers for every product. The proportion columns are rounded to 2 decimal places.

Product	Stack size	Per 1 scrap		Per 20,000 scrap		Proportion
		Items	Stacks	Items	Stacks	Items	Stacks
Advanced circuit	200	0.03	0.00015	600	3	005%	002.05%
Battery	200	0.04	0.0002	800	4	006.67%	002.74%
Concrete	100	0.06	0.0006	1200	12	010%	008.22%
Copper cable	200	0.03	0.00015	600	3	005%	002.05%
Holmium ore	50	0.01	0.0002	200	4	001.67%	002.74%
Ice	50	0.05	0.001	1000	20	008.33%	013.70%
Iron gear wheel	100	0.2	0.002	4000	40	033.33%	027.40%
Low density structure	50	0.01	0.0002	200	4	001.67%	002.74%
Processing unit	100	0.02	0.0002	400	4	003.33%	002.74%
Solid fuel	50	0.07	0.0014	1400	28	011.67%	019.18%
Steel plate	100	0.04	0.0004	800	8	006.66%	005.48%
Stone	50	0.04	0.0008	800	16	006.67%	010.96%
Total	—	0.6	—	12000	146	100%	100%

The total per 1 scrap is the expected quantity of something, calculated as the sum of expected quantities of the other items (this calculation is valid since they are statistically independent). This is not the same as the probability of getting something, which is 0.468775584950143, calculated as 1 minus the probability of getting nothing, i.e. the product of 1 minus the probability of getting each item. The difference is accounted for by the fact that each craft of the scrap recycling recipe can produce multiple items.

One cargo wagon has 40 slots, so to get 146 slots you need 4 cargo wagons, with 14 left over.

If the holmium ore is converted to holmium solution before being shipped by rail, it will also consume 5% of the ice (as water) and 12.5% of the stone. Per 20,000 scrap this translates to a saving of 4 stacks of holmium ore, 1 stack of ice, and 2 stacks of stone, for a total of 139 stacks, while adding a fluid wagon (holmium solution cannot be barrelled). It produces 10,000 holmium solution before productivity.

If the ice is melted before being shipped out, it will produce a total of 20,000 water. If barrelled, it goes into 400 barrels (40 stacks of barrels) of water, while eliminating 20 stacks of ice, and if fresh barrels are used, they consume 400 steel (4 stacks), thus occupying 14 more stacks than the ice would, for a total of 162 stacks occupied. This is 2 stacks more than will fit in 4 cargo wagons. Alternatively the water can be put in a fluid wagon, which frees up only the 20 stacks taken up by ice, for a total of 126 stacks; this isn't enough to eliminate the fourth wagon, but processing the holmium as well brings it down to 119 stacks and 3 cargo wagons, for a total of 5 wagons (including 2 fluid wagons). Shipping liquid water rather than ice makes it harder to void if you have a surplus, since you have to barrel it first.

In any case, most of the time it just won't be possible to ship processed scrap, because scrap islands don't have the space needed for recyclers, sorting, processing and power in addition to drills and the train stop (that said, you can probably just use filtered inserters and filtered wagon slots rather than actually sorting).