2–3 T/H Plant Based Cat Litter Production Line in Indonesia

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Indonesia Provides a Real Market for Tofu-Style Litter

Plant-based litter is already sold in Indonesia through pet retailers and e-commerce, including tofu and tofu-cassava products. That makes the project less dependent on educating the market from zero; the harder task is producing a local product with repeatable clumping, moisture and dust performance. A plant based cat litter plant in Indonesia or a tofu cat litter plant in Indonesia can therefore compete on local formulation, packaging and delivery speed while still using imported products as a benchmark for clumping and dust performance.

The customer competes on a combination of local raw-material access, shorter supply chains and product performance rather than on one fixed import-price comparison. Retail and wholesale prices can change quickly, so the factory is evaluated from actual ingredient, packaging, power and channel costs.

East Java offers a practical raw-material network because soy-food processing creates okara and regional mills supply starch and flour ingredients. The plant still requires supplier specifications—especially moisture and contamination limits—because “local” does not automatically mean production-ready.

Corn starch and corn flour are purchased already milled, which reduces the grinding load and keeps the hammer mill focused mainly on dried okara.

The existing industrial warehouse has adequate floor strength and moderate height for a horizontal-to-semi-vertical cat litter line without building a tall process tower.

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Okara Moisture Defines This Surabaya Cat Litter Line

Parameter	Value
Project location	Surabaya, East Java, Indonesia
Plant capacity	2–3 T/H process line; about 9,600 T/Y on a 300-day, 16-hour schedule
Facility area	2,000 m² production + 80 m² office inside the building
Main products	Tofu-style plant-based cat litter using okara, corn starch, corn flour and wheat flour
Staff	10 total (8 production, 2 admin/sales)
Operation hours	Two 8-hour shifts
First inquiry	March 2024
Contract signed	June 2024
Equipment shipped	August 2024 from Qingdao
Commissioning completed	November 2024
First commercial sales	December 2024

Equipment investment (delivered to Surabaya): approximately US$85,000
Total fixed project cost (equipment + shipping + installation + building modifications + electrical): approximately US$118,000

Financing structure is customer-specific and is not used as a technical performance claim. The relevant project benchmark is the completed fixed investment, while working capital, interest and channel inventory should be modeled separately.

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Okara Is Useful Only After Water Is Removed

The standard formula uses five material groups sourced through the Surabaya-area supply chain. The most important distinction is that the 3,000 T/Y okara basis refers to pre-dewatered or partially dried material received for final on-site moisture adjustment, not 65–70% moisture tofu slurry.

Material	Annual usage (tons)	Source	Cost basis	Notes
Okara (soybean residue)	3,000	Partner tofu processors	Contract-specific	Pre-dewatered / partially dried before final on-site drying
Corn starch	3,000	Regional starch supplier	Contract-specific	Food/process grade, already milled
Corn flour	3,000	Local mill	Contract-specific	Already milled
Wheat flour	900	Local mill	Contract-specific	Binding and formula adjustment
Food coloring (natural)	3	Imported	Low-inclusion	Premium variants only
Food-grade fragrance	5	Imported / specialty supplier	Low-inclusion	Premium variants only

Total annual ingredient basis: about 9,900 tons for the standard production plan, plus low-inclusion color and fragrance where required.

Okara is delivered after supplier-side dewatering and is held under the 200 m² covered drying area until it reaches roughly 15–20% moisture. Rainy-season material receives forced ventilation and longer residence time before grinding. This keeps the plant from depending on tropical sun alone to remove several tons of water per hour.

Corn starch, corn flour and wheat flour arrive already ground and move directly to the batching and mixing area after receiving inspection.

Color and fragrance are optional. The standard product remains uncolored and unscented; premium recipes add these ingredients at controlled low inclusion so they do not replace the functional starch and fibre system.

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The Pellet Mill Has More Capacity Than the Drying Section

The project was designed for simple operation, but the machinery is not undersized. The 37 kW ring-die unit is configured as an SZLH320 cat litter pellet machine; its nominal tofu-litter capacity is above the 2–3 T/H plant target, leaving the upstream mixing and downstream drying/cooling sections to set practical line throughput. In practical terms, this cat litter manufacturing line in Indonesia is constrained more by final drying and cooling than by the 37 kW pellet press itself.

Equipment	Qty	Specification	Notes
Feed hopper with dust hood	1	1.5 m³	For bag dumping
Hammer mill	1	30 kW, 2 mm screen	Grinds dried okara
Bucket elevator (1#)	1	DTG36/23, 7 m lift
Buffer bin	2	1 m³ each	Ground-material buffering
Bucket elevator (2#)	1	DTG36/23, 6 m lift
Ribbon mixer	2	SLHY2.0, 1 ton/batch	5.5 kW each
Permanent magnet	1	TCXT20	Removes ferrous contamination
Cat litter pellet machine	1	SZLH320, 37 kW, 3–4 mm die	Nominal press capacity above line target
Scraper conveyor	4	Various lengths
Counterflow cooler (primary)	1	SKLN2.5	Pre-drying temperature reduction
Electric drying oven	2	Approx. 75 kW each	Low-temperature final drying
Counterflow cooler (secondary)	1	SKLN2.5	Final cooling before screening
Vibrating screener	2	SPJH110x2	3 decks
Pulse-jet dust collector	8	TBLMa-6 and TBLMa-4
Cyclone (for cooler exhaust)	2	900 mm dia
Bagging scale	1	5–15 kg bags
Packaging machine	2	Semi-automatic
Sewing machine	5	Portable
Air compressor	1	7.5 kW

The two electric drying modules are sized as a real finishing stage rather than as small warming ovens. Their job is to bring cat litter from the post-pelleting moisture range toward a stable final product without scorching starch or creating an excessively hard granule.

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Process Flow From Dried Okara to Finished Litter

The process is designed for operators who are new to cat-litter manufacturing. Each stage has a clear quality purpose: stabilize okara moisture, create a uniform starch-fibre blend, form the litter, remove heat and moisture, classify the product and pack only stable material.

Stage 1 – Raw Material Preparation

Okara arrives after supplier-side dewatering and is finished under covered on-site drying until it reaches roughly 15–20% moisture. The dried material is then ground through a 2 mm screen to create a consistent fibre fraction. This is far more realistic than transporting 65–70% moisture tofu slurry directly into a 2–3 T/H pellet line.

Corn starch, corn flour and wheat flour arrive already milled and move directly to the mixing area after receiving inspection.

Stage 2 – Batching and Mixing

The standard recipe is managed as a percentage formula rather than a rigid one-ton marketing recipe. Dried okara, corn starch and corn flour form the main solids; wheat flour adjusts binding; process water is added only as needed to reach the forming moisture.

• 300 kg dry ground okara
• 300 kg corn starch
• 300 kg corn flour
• 90 kg wheat flour
• 10 kg water (added during mixing)

Mixing time is controlled by uniformity rather than fixed only for speed. Fragrance or color is added late in the batch so low-inclusion ingredients disperse without being lost in dust collection.

Stage 3 – Pelleting

The mixed mash feeds the SZLH320 ring-die cat litter machine. Standard litter uses approximately 3–4 mm die openings. Product leaves the die hot and still above final storage moisture, so pelleting is followed immediately by controlled cooling and drying.

Stage 4 – Primary Cooling

Primary counterflow cooling reduces the peak pellet temperature before low-temperature drying. This protects starch structure and reduces the amount of sensible heat the electric drying section must handle.

Stage 5 – Final Drying

Two electric drying modules bring the litter toward approximately 6–8% final moisture. The target temperature remains around 55–60°C so moisture is removed without over-cooking the starch system or making the granules unnecessarily hard.

Why keep the temperature moderate? Plant-based litter needs enough drying for storage stability but still has to absorb and clump. Excess heat can change texture and increase brittleness, while insufficient drying raises mold and packaging risk.

Stage 6 – Secondary Cooling

After drying, the second cooler brings finished litter close to ambient temperature before screening. Warm product is not bagged directly because trapped heat can create condensation inside sealed packs.

Stage 7 – Screening

The screening section separates saleable size grades from fines and oversize material. Standard products remain around the 2–4 mm market range, while fines are recycled and oversize granules are reprocessed rather than packed as finished litter.

• Fine (1-2mm): Premium product
• Medium (2-4mm): Standard product
• Coarse (4-6mm): Economy product

Fines go back to the mixer. Overs go back to the hammer mill.

Stage 8 – Packaging and Sealing

The bagging scale handles 5–15 kg packs according to the customer order. Bags are sealed, palletized and moved to the finished-goods area only after moisture and temperature checks pass.

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Commissioning Exposed Moisture Feeder and Drying Bottlenecks

The first two months showed four process issues that were more useful than any theoretical capacity estimate.

Issue 1: Okara moisture was inconsistent.

Rainy-season drying took longer than expected, so supplier-side dewatering specifications were tightened and the covered drying area received forced ventilation. Production now releases okara to grinding by measured moisture rather than by drying time alone.

Issue 2: The pellet mill feeder was too aggressive.

The 37 kW SZLH320 press had more forming capacity than the rest of the line needed. A rapid feeder ramp caused temporary overloads, so the VFD acceleration curve was softened and feed rate was tied to motor load instead of an arbitrary 2 T/H setpoint.

Issue 3: The electric drying modules heated unevenly.

Air distribution and heating-element output were balanced so trays or product zones no longer left the dryer at different moisture levels. The final acceptance check is moisture spread across the batch, not only average outlet temperature.

Issue 4: Dust remained around packing.

Bagging seals and local extraction were improved after operators reported visible dust. The fix was a combination of better enclosure and local filtration rather than simply increasing the main collector fan speed.

The commissioning lesson was clear: a cat litter line is not a pellet mill plus a bagger. Moisture, drying, screening and packaging have to be tuned as one system before commercial product is released.

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Shift-Level Quality Control Uses Simple Repeatable Tests

The customer does not need a large laboratory to control routine production. Operators use a short set of checks that can be repeated every shift and compared with retained reference samples.

Test	Target	Method	Frequency
Moisture	6-10%	Handheld moisture meter (bought online, $80)	Every batch
Pellet diameter	3-4mm	Caliper	Every hour
Fines	<3%	Sieve (2mm screen)	Every hour
Clump test	Holds together for 10 seconds	Pour 50ml water on 100g sample	Every shift
Odor	Pleasant (not musty)	Nose	Every shift

The clump test is especially important because it reflects the combined effect of okara fibre, starch ratio, final moisture and particle size. Formula changes are made only after moisture and screening results are checked, rather than increasing starch automatically whenever one sample looks weak.

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Environmental Control Is Mainly Dust Noise and Domestic Water

The applicable Indonesian environmental approval route depends on project scale, location and local permitting requirements. For this compact Surabaya plant, the engineering focus is straightforward: keep dry powder contained, prevent process waste from entering drains and control equipment noise at the property boundary.

Air emissions: Pulse-jet collectors serve bag dumping, grinding, mixing, cooling and screening points. Filter performance is verified through housekeeping and differential-pressure checks rather than relying on one unsupported stack-emission number.

Wastewater: There is no continuous process-water discharge. Added mixing water leaves mainly through the drying stage, while domestic sewage follows the site sanitation system.

Solid waste: Clean fines are recycled where quality allows; empty ingredient bags and non-product packaging are separated for recycling or municipal handling.

Noise: The hammer mill, pellet press, fans and screen are the main sources. Equipment foundations, enclosure and maintenance are used to keep noise manageable inside the industrial site.

Permitting and operating records are maintained according to the local industrial-zone requirements; the project page does not treat one named permit type as universally applicable to every Indonesian cat litter factory.

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Commercial Performance Must Be Modeled From Real Channel Costs

Commercial production began in December 2024. Early operating records are useful for understanding cost categories, but they should not be turned into a guaranteed margin or payback claim because ingredient prices, e-commerce fees, packaging, delivery and marketing can move quickly.

Production cost should be tracked per saleable kilogram:

Cost component	Rupiah/kg	USD/kg
Raw materials (okara, starch, corn flour, wheat flour)	4,200	0.27
Electricity (200 kWh/ton at 1,500 rupiah/kWh)	300	0.019
Labor (8 production staff, 3 million rupiah/month each)	1,200	0.077
Packaging (7kg printed bags)	2,500	0.16
Maintenance (dies, hammers, bearings)	500	0.032
Depreciation (equipment over 7 years)	700	0.045
Rent (warehouse)	400	0.026
Overhead (admin, delivery, marketing)	800	0.051
Total	10,600	0.68

Selling prices vary by formula, pack size, retail channel and promotion.

• Standard uncolored: 22,000 rupiah ($1.41)
• Premium green (lavender scent): 28,000 rupiah ($1.79)
• Economy (higher okara, lower starch): 18,000 rupiah ($1.15)

Gross margin should be calculated from current invoices: ingredient cost, power, labor, packaging, platform fees, delivery, returns and taxes all belong in the model.

Early monthly production: commercial output was below the full design target while the customer built distribution and stabilized drying.
Commercial margin: calculated from actual channel prices, packaging, platform fees, delivery and ingredient cost rather than presented as a fixed project number.

Financing: loan payments and interest are customer-specific and are evaluated separately from manufacturing cost.

Net profit: not presented as a fixed project fact because sales mix and channel costs determine the actual result.

The useful financial benchmark is the approximately US$118,000 completed fixed investment and the customer’s real cost per saleable kilogram—not an unusually short payback promise.

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The Product Mix Can Expand Before the Factory Does

The customer launched standard and premium plant-based litter variants through pet retail and online channels. The first commercial priority is repeatable product quality rather than the number of SKUs.

• 20 pet stores in Surabaya (direct sales)
• Online via Tokopedia and Shopee Indonesia
• A small export order to Bali (three pet stores)

Customer response is tracked through returns, repeat orders and product reviews rather than isolated promotional quotes.

“Finally, an Indonesian-made litter that doesn’t cost a fortune. My cat transitioned easily. No dust.”

“The green lavender one smells nice – not too strong. Clumps well.”

“The economy version is a bit dusty but acceptable for outdoor cats.”

The customer’s biggest surprise was online sales. Within two months, his Shopee store had over 500 five-star reviews. He’s now shipping to Jakarta, Bandung, and Medan.

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Expansion Should Follow the Drying and Packing Bottlenecks

The current warehouse and single forming line still have expansion options, but the next investment should follow the actual bottleneck instead of automatically adding another pellet mill.

First check: whether the okara drying and raw-material preparation system can support a longer operating schedule through the wet season.

Second check: whether fragrance or liquid-additive dosing needs automation as premium product share grows.

Third check: whether packing, warehouse and dispatch can support more daily output before production hours are extended.

Only after those checks: consider a second pelletizing module or a larger building if confirmed sales exceed the current line’s practical capacity.

Export may become an option through Surabaya, but neighboring-market demand should be confirmed with distributors and product-registration requirements before capacity is expanded for that purpose.

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What RICHI Contributed to the Project

The supplied value was not limited to the cat litter press. The project required raw-material testing, process layout, drying logic, cooling, screening and operator training around a new consumer product. That whole-line logic is what differentiates a tofu cat litter making plant in Indonesia or a cat litter manufacturing plant in Indonesia from a standalone pellet-machine purchase.

Project scope for Indonesian customers:

• Proportional capital investment. The equipment package remains around US$85,000 while the completed fixed project is approximately US$118,000.
• Maintainable equipment. Standard motors, bearings and common mechanical components simplify local service.
• Material testing. Okara, cassava residue, corn-based ingredients and other plant fibres should be tested before the final recipe and die are fixed.
• Installation and startup support. Commissioning focuses on moisture, feed rate, drying, cooling and screening rather than only on starting the press.
• Operator documentation. Controls, safety procedures and maintenance points are provided in a format the local operating team can use.

The design boundary is the whole line: from ingredient preparation to stable packed litter. A high-capacity press cannot compensate for wet okara, weak drying or poor screening.

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Start With Okara Solids Not Wet Tons

A first-time buyer does not need a very large factory, but the project must be based on dry usable material rather than the wet weight leaving a tofu process.

If okara, cassava residue, rice bran or corn-based ingredients are available locally, record their moisture, solids content and monthly quantity before asking for a plant quotation.

A 2–3 T/H plant based cat litter production line can be commercially useful, but practical output will be set by drying, cooling, screening, packing and sales—not by the pellet press alone.

For a tofu cat litter production line in Indonesia, send the dried-equivalent raw-material availability, target particle size, clumping requirement, pack sizes, building dimensions and expected sales channels. Those inputs are enough to build a project-specific process instead of a generic machine list.

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Qingdao to Tanjung Perak

All cat litter making machine equipment for this project shipped from Qingdao Port to Tanjung Perak Port in Surabaya. The compact package fit into standard containerized logistics before local delivery to the industrial warehouse.

Customs treatment and tariff preference should be confirmed by the customer’s broker against the current HS classification and applicable China–ASEAN trade rules. The project page does not assume one fixed duty rate for every shipment.

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What This Indonesia Project Shows

The project demonstrates that local plant by-products can support a consumer cat-litter product when moisture and formulation are controlled before pelleting.

The engineering challenge is not unusual machine complexity; it is connecting supplier-side okara preparation, mixing, forming, drying and screening into one repeatable quality system.

For buyers entering this market, the next useful step is a raw-material and product test—not a generic profitability promise. An eco friendly cat litter production line in Indonesia or cat litter factory in Indonesia should also verify packaging claims and disposal instructions against the actual formula rather than relying on the plant-based label alone.