What is a zeolite 4a project report?
A zeolite 4A project report is a detailed project report (DPR) for a plant that reacts sodium aluminate with sodium silicate to make detergent grade zeolite 4A powder. It sets out the process route, machinery, raw material norms, buyers, project cost, means of finance, five-year projections, DSCR and break-even for a lender or investor.
Chemical entrepreneurs and detergent makers planning backward integration use it to size the plant and raise a term loan; banks use it to test whether the plant can repay.
Also known as: zeolite 4A business plan, project report on zeolite 4A, detergent grade zeolite plant DPR, sodium aluminosilicate project report.
Zeolite 4A manufacturing plant cost in India and plant economics
Our sample report models a 25 MT per day plant working 330 days a year, which gives 8,250 MT per year at full capacity. It starts at 60% utilisation, reaches 80% in Year 5 and sells at ₹38,700 per MT ex-factory.
| Land and site development | 117.33 |
|---|---|
| Building and civil works | 362.55 |
| Plant and machinery | 617.53 |
| Other fixed assets | 107.39 |
| Contingencies | 49.00 |
| Preliminary and pre-operative | 31.34 |
| Working capital margin | 72.28 |
| Total | 1,357.42 |
| Promoter's contribution (25%) | 339.36 |
|---|---|
| Term loan from bank (75%) | 1,018.06 |
| Cash credit limit (separate) | 216.86 |
| Total project cost | 1,357.42 |
DSCR, the debt service coverage ratio, shows how many times the cash from operations covers each year's loan instalments and interest. The sample's lowest year is 1.83, which leaves room if alumina or caustic soda prices rise. Customer credit is the largest working capital item: 45 days of receivables, worth ₹236.18 lakh in Year 1.
Term loan at 10.5% with a 6-month moratorium and 54 monthly instalments. All figures are illustrative.
Zeolite 4A manufacturing process, step by step
Zeolite 4A is a sodium aluminosilicate made by hydrothermal synthesis: two alkaline solutions are mixed, turned into a gel and then crystallised under heat. Most of the skill lies in holding the ratios, temperature and time steady, because they decide crystal size and calcium binding capacity.
- Aluminate preparation
Aluminium hydroxide is dissolved in hot caustic soda lye in a heated dissolver until the sodium aluminate solution is clear.
- Silicate dilution
Liquid sodium silicate is diluted with soft water and filtered, so that silica strength and impurity levels are the same in every batch.
- Gel formation
The two solutions are dosed into a stirred reactor in a fixed molar ratio; fast, even mixing prevents lumps that later become oversize particles.
- Crystallisation
The gel is held at about 85–95°C for a few hours until it turns into small cubic zeolite A crystals.
- Filtration and washing
A vacuum belt filter or filter press separates the crystals and washes out free alkali; the mother liquor goes back to the aluminate stage.
- Flash drying
The washed cake is dried in a flash dryer to a free-flowing white powder, with its bound water of hydration kept in.
- Testing and packing
Each lot is tested for calcium binding capacity, particle size, whiteness and pH, then packed in HDPE-lined 20 kg or 50 kg bags or one-tonne jumbo bags.
Which process route suits a new zeolite 4A plant?
The choice of alumina source sets raw material cost, product whiteness and where the plant can be built. A new unit that is not attached to a refinery usually starts with bought aluminium hydroxide, which is the route modelled in our sample.
| Aluminium hydroxide and sodium silicate | Bought hydrate is dissolved in caustic soda and reacted with liquid silicate. Pure feed gives high whiteness, and the plant can be sited near detergent buyers. Alumina is the main cost. |
|---|---|
| Sodium aluminate liquor from an alumina refinery | The refinery's own liquor replaces the dissolving step. NALCO's Zeolite-A plant at Damanjodi works this way, beside its refinery, on a process developed by CSMCRI, Bhavnagar. |
| Bauxite or bauxite leachate | CSMCRI has a patented process for making Zeolite-A from bauxite or Bayer liquor. It suits a promoter with access to bauxite and the capital for a digestion stage. |
| Calcined kaolin (china clay) | Kaolin is calcined and reacted with caustic soda. Feed is cheaper, but iron and titanium in the clay can lower whiteness, so this route needs careful testing before targeting detergent buyers. |
Decide the route first: it changes the raw material table, the machinery list and the effluent plan. Build the project report on one confirmed route and a named alumina supplier.
Raw materials for zeolite 4A
By the chemical formula of zeolite A, each tonne of hydrated product holds about 0.43 tonne of aluminium hydroxide equivalent and 0.33 tonne of silica, before process losses. In our sample report raw materials are 45.5% of sales, and aluminium hydroxide is the largest item.
| Raw material | Share of cost | Year 3 (₹ lakh) |
|---|---|---|
| Aluminium hydroxide (alumina trihydrate) | 40% | 406.99 |
| Liquid sodium silicate | 30% | 305.25 |
| Caustic soda lye | 26% | 264.55 |
| Process water treatment chemicals | 4% | 40.70 |
| Total | 100% | 1,017.49 |
Sodium silicate is bought to IS 381; low iron grades help whiteness. Caustic soda use depends on how much mother liquor is recycled.
Machinery for a zeolite 4A plant
The reactors and the flash dryer are the two largest items in the sample, together about 40% of plant and machinery. Wetted parts in contact with hot caustic need suitable steel and regular inspection.
| Machine | What it does | Sample cost (₹ lakh) |
|---|---|---|
| Sodium aluminate dissolver with heating | Dissolves hydrate in hot caustic | 61.75 |
| Sodium silicate dilution and storage tanks | Holds and dilutes liquid silicate | 37.05 |
| Jacketed gelation and crystallisation reactors | Forms the gel and grows crystals | 135.86 |
| Vacuum belt filter or filter press with wash system | Separates and washes the crystals | 86.45 |
| Flash dryer with hot air generator | Dries the cake to powder | 111.16 |
| Mother liquor recovery and evaporation system | Returns caustic liquor to the process | 61.75 |
| Steam boiler and utilities | Heats dissolver and reactors | 49.40 |
| Pneumatic conveying and bag packing system | Moves and packs the powder | 43.23 |
| Quality control laboratory | Tests binding capacity and particle size | 30.88 |
| Total plant and machinery | 617.53 | |
Costs are the sample report's estimates for a 25 MT per day plant. Get current quotations before you finalise.
Quality standards and licences for a zeolite 4A plant
Detergent buyers approve zeolite on test results, so the quality standard matters as much as the statutory approvals.
| Product standard | IS 15267:2003, Zeolite detergent grade, from the Bureau of Indian Standards |
|---|---|
| Typical buyer specification | NALCO's data sheet, for example: calcium binding capacity at least 160 mg CaO per gram, average particle size no more than 4 microns, whiteness at least 95%, pH 11 ± 0.5 in a 5% slurry |
| Raw material standard | IS 381:2024 for sodium silicate, the usual reference when buying liquid silicate |
| Pollution board consent | Consent to establish and to operate from the State Pollution Control Board, covering alkaline wash water, dryer emissions and boiler stack |
| Factory and boiler | Factory licence for the workforce, and registration and inspection of the steam boiler under boiler law |
| Business registration | Udyam registration and GST registration |
The pollution category and conditions are set by each state board. Confirm them before you finalise the site.
Who buys zeolite 4A in India?
Almost all detergent grade zeolite goes into washing powder, where it works as the builder that softens hard water. NALCO's data sheet puts its use at 25–30% of a detergent formulation, so every large powder plant is a bulk, repeat buyer.
Demand grows with the shift from sodium tripolyphosphate to phosphate-free formulations. Buyers run plant trials before approving a supplier and then place contracts with fixed monthly volumes.
- Branded detergent powder makers
- Regional and private-label detergent makers
- Detergent cake and bar makers
- Institutional and industrial cleaning chemical makers
- Chemical traders supplying smaller detergent units and export buyers
Where a new plant wins: zeolite is a low-value, bulky powder, so freight to the detergent plant is a real share of the landed price. A unit within a day's haul of two or three large detergent plants competes on delivery as well as on quality.
Mistakes that weaken a zeolite 4A project report
- Using trader prices for sales
Small-lot listing prices run well above contract prices to detergent makers. Revenue should use ex-factory contract rates for bulk bags.
- No mother liquor recycle in the cost
Without recovery, caustic soda use and effluent load rise sharply. The report should state the recycle rate it assumes.
- Ignoring the buyer approval period
Detergent makers trial new zeolite before they buy in volume. Year 1 sales should allow for this; the sample starts at 60% utilisation.
- Treating alumina price as fixed
Aluminium hydroxide is the largest raw material. A 10% price rise should be tested for its effect on profit and DSCR.
- Under-sizing steam and drying
Dissolving, crystallisation and flash drying all need heat. Low fuel estimates are a common reason for cash shortfalls after start-up.
How NPCS helps you set up a zeolite 4A plant
- Route and capacityCompare the aluminium hydroxide, refinery liquor and kaolin routes for your site and size the plant to your buyers.
- Raw material and utility normsConsumption per tonne, mother liquor recycle, steam and power, built into the cost of production.
- Bank-ready project reportProjections, DSCR, working capital and sensitivity to alumina price in the format your lender wants.
- Plant layout and approvalsLayout, effluent plan, boiler and pollution board requirements for your state.
NPCS has prepared project reports and feasibility studies since 1994. Its client list shows 269 assignments in specialty chemicals, including 2 for zeolite 4A.
What's inside the zeolite 4a sample report
- Introduction
- Uses and applications
- Market potential
- Manufacturing process
- Raw materials
- Plant and machinery
- Land, building and utilities
- Manpower
- Licences and approvals
- Project cost and means of finance
- Working capital
- Projected profitability
- Cash flow statement
- Projected balance sheet
- Depreciation
- Term loan repayment
- Debt service coverage
- Break-even analysis
- Financial ratios
- Key assumptions
- Conclusion
- Monthly loan repayment schedule
18 pages, five-year projections, illustrative figures.
Open sample reportFree sample or a report for your project?
| What you get | Free sample | NPCS report for your project |
|---|---|---|
| Capacity and location | Typical unit | Your capacity, site and state |
| Figures | Illustrative | Built on current prices and quotations |
| Machinery suppliers and quotations | No | Yes |
| Market survey for your region | No | Yes |
| Bank or scheme format (PMEGP, term loan) | No | Yes |
| Use for a loan application | No | Yes |
Real NPCS zeolite 4a project reports
These are zeolite 4a project reports NPCS has prepared, with the plant capacity, total capital investment, rate of return and break-even worked out in each. Costs have moved since some were written, so we bring any of them up to date for your capacity and location.
| Project report | Plant capacity | Total investment | Rate of return | Break-even | Action |
|---|---|---|---|---|---|
| Zeolite 4A | 2.0 MT/Day | ₹2.96 crore | 61.9% | 44.2% | Get this report |
| Zeolite 4a (Detergent Grade) | Zeolite 4a (Detergent Grade): 3,000 MT Per Annum | ₹6.88 crore | 27% | 55% | Get this report |
| Zeolite 4a (Detergent Grade) | 20,000 MT/Annum | ₹9.89 crore | 32% | 57% | Get this report |
Figures as worked out in each NPCS report. Total investment includes plant and machinery, land and building, and working capital.
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Zeolite 4A project report: frequently asked questions
What is the cost of a zeolite 4A manufacturing plant in India?
A 10–15 MT per day plant needs roughly ₹8–11 crore and a 30–40 MT per day plant about ₹15–20 crore, including land, building and working capital margin. Our sample report models a 25 MT per day plant at ₹1,357 lakh. These are indicative figures; your report works out the cost for your capacity, route and location.
What raw materials are used to make zeolite 4A?
A non-integrated plant uses aluminium hydroxide, liquid sodium silicate and caustic soda lye, plus some water treatment chemicals. In our sample report aluminium hydroxide is the largest item at 40% of raw material cost. Plants next to an alumina refinery can use sodium aluminate liquor directly instead of dissolving aluminium hydroxide.
How is detergent grade zeolite 4A made?
Sodium aluminate and sodium silicate solutions are mixed to form a gel, which is crystallised at about 85–95°C for a few hours. The crystals are filtered, washed and flash dried to a fine white powder. The alkaline mother liquor is recovered and reused, which keeps caustic soda cost and effluent load down.
Is zeolite 4A manufacturing profitable?
In our illustrative sample, a 25 MT per day plant earns a 27% return on investment in Year 3, breaks even at about 32% of capacity and pays back in about 3.1 years. Real margins depend on the price of aluminium hydroxide and caustic soda, steam and power cost, and winning approval from detergent buyers.
Why do detergent makers use zeolite 4A instead of STPP?
Zeolite 4A softens wash water by exchanging its sodium for the calcium in hard water, which is the main job of a builder. It is phosphate-free, so it avoids the water pollution linked to sodium tripolyphosphate (STPP). CSMCRI, Bhavnagar developed an Indian process for it as an eco-friendly substitute for phosphate builders.
Which quality standard applies to detergent grade zeolite?
IS 15267:2003, Zeolite detergent grade, is the Indian specification. Buyers check calcium binding capacity, particle size, whiteness and pH on every lot. As an example of a producer data sheet, NALCO specifies at least 160 mg CaO per gram, an average particle size of no more than 4 microns and at least 95% whiteness.
Is the sample report free and can I use it for a loan?
The sample is free to view and download. It is an illustrative report that shows the format and depth of an NPCS report; its figures are representative and not based on a real project, so it should not be submitted to a bank. For a loan, NPCS prepares a report for your own capacity, process route and location.
Sources and references
- Zeolite-A: product data sheetNational Aluminium Company Limited (NALCO), checked Oct 2026
- Zeolite-A powder (detergent grade)India Science, Technology and Innovation portal, Department of Science and Technology, checked Oct 2026
- Manufacture of Zeolite-A (detergent builder) from bauxite or bauxite leachateIndia Science, Technology and Innovation portal, Department of Science and Technology, checked Oct 2026
- Zeolite-A powder: technology licensing success storyNational Research Development Corporation, checked Oct 2026
- IS 381 Sodium silicate: standard details (lists IS 15267:2003 Zeolite detergent grade)Bureau of Indian Standards, checked Oct 2026
The NPCS project team, led by Ajay Kumar Gupta
This page and its sample report are prepared and reviewed by the NPCS project team, which has written techno-economic feasibility studies and detailed project reports since 1994.
Ajay Kumar Gupta founded Niir Project Consultancy Services (NPCS) and leads the organisation. With 40 years of experience in MSME project consulting, he has built the team that has delivered more than 28,000 project reports for clients worldwide, helping entrepreneurs plan and finance profitable manufacturing businesses.
- Published
- Last updated
- Next review
- Oct 2027
- Reviewed by
- NPCS project team
This page is reviewed every 12 months, or sooner when scheme limits, GST rates, BIS rules or pollution categories change. The sample report is illustrative: its figures are generated from industry-typical ratios for a unit of this size, checked so every statement balances, and are not taken from any client project.