Engineering a 30 Million m²/Year Gypsum Board Line: Configuration and Execution Notes from a Tanzania Project

A gypsum board production line rated at 30 million m²/year has been shipped to a customer in Tanzania in September 2026 by Yurui (Shandong) Machinery — more than ten containers, with the supplier's own engineers handling installation and commissioning on site. This is the engineering record of that project: the capacity maths behind the headline number, the drying and raw-material decisions that set the configuration, how the line was broken into transport modules, and the on-site sequence that ends with the first saleable board.

The engineering numbers behind "30 million m²/year"

A capacity figure is a promise about line speed and cut rate. Working from the published operating pattern of 24 h/day and 300 days/year, and the standard board width of 1,200 mm:

The stucco feed this line has to keep up with

An estimate worth doing before any configuration is agreed: how much gypsum powder sits upstream of 100,000 m² of board per day.

• A 9.5 mm board at a typical board density of ~700–800 kg/m³ contains roughly 7–7.5 kg of gypsum per m².
• At 100,000 m²/day that implies an order of 700–750 tonnes of stucco per day feeding the board line.

Read this as an estimate, not a supplier figure. The per-m² figure is derived from thickness × board density; the real number depends on board type, additives and foaming. Use it to size the calcination section or the powder supply — then confirm against a material test on the actual gypsum.

That single number is why the upstream decision (own powder plant versus purchased stucco) usually gets made together with the board line, not after it. In the same month as this shipment, a separate customised gypsum powder production line was also prepared for Tanzania — crusher, grinding mill and calciner packed for Dar es Salaam (company news, September 2026).

Drying system: hot air or thermal oil

The drying section is the second configuration decision that cannot be changed later at low cost. The group builds both versions as separate product lines — hot air and hot oil — and the published heat-source options for the board line are coal, natural gas, heavy oil or diesel (board line specification).

The decision normally turns on four site conditions rather than on equipment preference:

Because the heat source also determines the burner, ducting and safety layout, it has to be fixed during process design — the same stage as the raw material test.

Raw material first: what local gypsum changes

Four regions of Tanzania currently produce gypsum — Kilwa (Lindi), Mkuranga (Coast Region), Manda (Dodoma) and Itigi (Singida) (TanzaniaInvest) — gypsum quarried from near-surface deposits and processed by crushing and calcination, the same unit operations used in the plant being commissioned here (Minerals Education Coalition, gypsum guide).

Three properties of the local material drive configuration choices:

1. Grade and purity — gypsum from different deposits differs in associated minerals and moisture, and both affect crushing, grinding and calcination settings.
2. Crystal water and reactivity — the calcination curve has to be tuned to the actual feed, which is why a line commissioned on imported stucco can behave differently on local ore.
3. Feed consistency — a board line with a fixed cut rate needs consistent calcined powder; a supplier of ore from multiple pits needs blending or stock control.

The practical rule: the raw material test belongs in process design. Retrofitting the calcination section after commissioning costs far more than testing three samples before it.

Why a line this size leaves in more than ten containers

A 30 million m²/year line is not shipped as a machine; it is shipped as a set of transport modules, and the container plan is an engineering deliverable in its own right. The Tanzania shipment ran to more than ten containers. The constraints that shape the split:

1. Oversize sections — dryer tunnel modules, forming benches and long conveyor frames exceed container length, so they are split at designed joints with re-assembly references.
2. Heavy components — the calciner, mills and hydraulic power units are weight-limited rather than volume-limited.
3. Lifting and handling points — every module ships with marked lifting points that match the customer's available crane or forklift capacity at the destination site.
4. Sequence-matched packing — modules are packed in the order they are needed on site, so foundation and erection work is not blocked waiting for a container at the back of the queue.
5. Protection in transit — control cabinets, instruments and electronic drives travel separately from fabricated steel.

From foundation to first saleable board

The on-site sequence for a line of this class, with the supplier's engineers present throughout:

1. Foundation and embedment verification — anchor bolt positions, level and load paths checked against the installation drawings before any section is placed.
2. Utilities brought to the line — power, water, compressed air and the heat source connected to the specified capacities.
3. Mechanical erection — sections positioned and aligned in line order, using the re-assembly references created at the splitting joints.
4. Electrical and control integration — drives, sensors and the control system wired and checked section by section.
5. Dry run — individual machines jogged, then sections run in sequence without material.
6. Trial production and recipe tuning — the first board is produced, then thickness, foaming behaviour and setting time are trimmed to suit the composition of the customer's own gypsum.
7.  Operator training — the plant's own production crew is trained on a line that is already running, with the shift pattern built around roughly 15 line operators.

The same line at different scales: what changes

The group's own project record makes the scale-up visible. Two gypsum board references sit at 10 million m²/year; this Tanzania project is three times that.

Moving from 10 to 30 million m²/year is rarely "the same line, bigger". It changes the stucco supply requirement from hundreds of tonnes per day upward, extends the drying section, increases the container count, and raises the handling capacity the destination site must have. Those three items — powder supply, dryer, logistics — are where scale-up projects fail to plan.

Engineering checklist for an equivalent project

• Raw material test completed before process design (not after installation)
• Heat source confirmed, with the fuel or energy supply contracted
• Site utilities sized to the specified capacities (power, water, compressed air)
• Destination handling capacity checked against the largest transport module
• Container plan matched to the erection sequence
• Operator team recruited early enough to be trained on the running line
• Spare parts and wear items list agreed at contract stage
• Acceptance criteria and output test method agreed before dispatch
• Installation drawings, foundation plans and re-assembly references handed over

FAQ

How fast does a line rated at 30 million m²/year actually run? About 100,000 m²/day at 300 operating days per year, which is roughly 4,167 m²/h and a line speed of about 58 m/min at 1,200 mm board width — equivalent to around 24 cuts per minute at 2,400 mm board length.

Should the drying section be hot air or thermal oil? Decided by site conditions: which fuel or energy the customer can secure at stable cost, how steady the drying temperature has to be, and how much complexity the operating team can maintain. Both versions are built as separate product lines, and the choice must be fixed during process design because it determines burner, ducting and safety layout.

How much gypsum powder does a line this size consume? An order-of-magnitude estimate is 700–750 tonnes of stucco per day for 100,000 m²/day, derived from board thickness and density (~7–7.5 kg per m² at 9.5 mm). Treat it as a sizing figure for the calcination or powder supply and confirm it with a material test.

Why does a line this size need more than ten containers? Because it ships as transport modules: oversize dryer and forming sections are split at designed joints, heavy components such as calciner and mills are weight-limited, and modules must be packed in erection order with lifting points matched to the destination site's handling capacity.

What has to be ready on site before installation starts? Foundation and anchor points verified against the drawings, utilities connected to specified capacities, and handling equipment able to lift the largest module. Delays here are the most common cause of extended commissioning.

Can the line run on locally mined gypsum in Tanzania? Yes — gypsum is already produced domestically in four regions (Kilwa, Mkuranga, Manda and Itigi). The calcination and setting parameters must be tuned to the actual deposit — gypsum grade and crystal-water content vary between sources, so raw material testing belongs in process design rather than in commissioning.

What changes when scaling from a 10 million to a 30 million m²/year line? Cut rate triples, the calcination or powder supply requirement rises accordingly, the drying section is longer, the container count increases, and the destination site needs greater handling capacity. Powder supply, dryer and logistics are the three items to plan first.

Planning a gypsum board plant? Yurui (Shandong) Machinery supplies gypsum board, gypsum powder, gypsum block and ceiling board production lines, with process design, manufacturing, overseas installation and operator training. Tel: +86-18253977770 · Website: yuruimachine.cn