When people start looking into e-waste recycling, one of the first questions they ask is simple but important: how much can a circuit board gold extraction machine actually process? The answer is not a single number. Print circuit board (PCB) recycling lines come in many sizes, and the throughput you need depends on how much scrap you can gather, how many hours you plan to run, and what you want to recover besides gold. This article walks through the typical capacity range of circuit board recycling equipment, explains what drives real-world output, and helps you match a machine to your volume.
What does "capacity" mean for this equipment?
Manufacturers rate circuit board recycling machines in kilograms per hour (kg/h). That figure describes how much input scrap the line can ingest and separate in one hour of continuous operation. It is worth distinguishing two things that are often confused:
- Feed capacity — the weight of whole or pre-shredded circuit boards you push through the line per hour.
- Metal recovery — the share of copper, gold, silver and other values actually pulled out of that feed. High feed capacity means nothing if the recovery rate is low.
Most industrial PCB recycling plants land somewhere between 300 and 5000 kg/h, with the most common entry points at 300, 500, 1000 and 2000 kg/h. Larger custom lines can be designed well beyond that for high-volume operators.
Typical capacity by machine size
If you are comparing circuit board recycling plants at 500–2000 kg/h, here is how the sizes usually break down:
- 300–500 kg/h — a compact entry-level line, ideal for a first recycling business or a workshop processing a limited volume of boards each day.
- 1000 kg/h — the most popular mid-size choice, balancing throughput with footprint and investment.
- 2000 kg/h and above — a production-grade plant for operators with steady scrap supply, often running two shifts or more.
San Lan Technologies builds all of these configurations. Its dry-separation models, for example, are rated from 300–500 kg/h up to 2000 kg/h, and the wet-separation versions can be designed for 300–5000 kg/h to suit a larger plant. Copper powder purity on the dry lines typically reaches 96–98%, with recovery rates around 95%.
What actually determines real throughput?
The rated number on a datasheet is only the starting point. Several practical factors decide how many tons you really process per day:
- Board type and condition. Rigid computer boards granulate faster than flexible or high-plastic boards. Dirt, connectors and mixed components slow the line down.
- Pre-processing. A shredder and pre-chopper that reduce boards to a uniform size before granulation keeps the main line running at full speed.
- Separation method. Air (dry) separators and wet separators each have their own operating rhythm; pick the one that suits your material and local water regulations.
- Operating hours. A 1000 kg/h line run for 8 hours moves up to 8 tons a day; run for 16 hours it moves twice that. Daily capacity is capacity times uptime.
How capacity connects to gold recovery
A circuit board gold extraction line does not produce gold by itself in one pass. It works in stages: shredding, granulation, then separation of the metal-rich powder from plastic and glass fibre. The concentrated powder, which still contains copper, gold, silver and aluminium, is then melted so the metals can be separated into saleable ingots. A medium frequency electricity furnace handles this melting step, heating the metal directly by induction so it stays clean and pure.
This is why the capacity of the whole line matters more than the capacity of any single machine. If your shredder and granulator can handle 1000 kg/h but your furnace can only melt a small batch at a time, the bottleneck shows up at the melting stage. Planning the line as a whole — from the pre-chopper to the furnace — gives you a realistic picture of daily output.
Choosing the right capacity for your business
Before you settle on a size, ask yourself a few practical questions:
- How much scrap can you secure? A 2000 kg/h plant is only worth it if you have a reliable, steady supply of boards to feed it.
- How many hours will you run? Many operators start with one shift and expand later. A slightly smaller line running two shifts can beat a bigger line running one.
- What is your space and budget? Larger capacity usually means more shredders, more screens and a bigger footprint, plus higher upfront cost.
- Can the line grow with you? Modular designs let you add capacity later without replacing everything.
A good supplier will help you match the line to your actual scrap volume rather than simply selling you the biggest machine. San Lan Technologies offers custom design from 300 to 5000 kg/h, so you can start at a sensible size and scale up as your supply grows.
Final thoughts
The capacity of circuit board gold extraction equipment typically ranges from 300 to 5000 kg/h, with 500, 1000 and 2000 kg/h being the most common sizes. The right choice depends on your scrap supply, your operating schedule and your budget — not on chasing the biggest number. When the shredding, granulation, separation and melting stages are sized to work together, the daily output you can expect is realistic and dependable.
If you are unsure which capacity fits your operation, it is worth talking through your scrap volume and goals with an experienced manufacturer before you buy. Getting the size right the first time saves both money and downtime.
