Another load of fine dolomite leaves the Brisbane site.
Tag: natural gypsum
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Granular Aerial Grade Gypsum
Pacific Fertiliser releases a new Granular aerial grade gypsum product.
To compliment the existing 2-4mm granular gypsum and REGYP’s SSG10 recycled gypsum products, the larger 4-12mm granules offer the following:
- lower cost compared to 2-4mm gypsum granules
- larger granules assist with product flow in aircraft hoppers and small conical spreaders
- granular gypsum uses super fine grade natural gypsum to make the larger granules so once wet the solubility is still good
- lower dust compared to powdered product
- ability to blend it with other granulated products and liquid biology stimulants
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Granular Gypsum
Pacific Fertiliser produce a granular gypsum product suitable for air seeder and aircraft application.
The 2-4mm granular gypsum is made locally from blending various domestic sources of natural gypsum together to make consistent and stable particles. We then re screen the product after granulation to ensure there are no fines present.
For sport turf applications we also produce a 1-2mm gypsum product.
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THE IMPORTANCE OF SOLUBILITY IN SOIL CONDITIONERS
Solubility in soil conditioners, such as gypsum, lime and dolomite are very important. The key to solubility is mainly in particle size. The finer the product, whether it be in gypsum, lime, dolomite or any other natural occurring mineral the quicker the result.
Natural raw gypsum, aglime and dolomite should be applied at least six months before cropping to achieve worthwhile results. Products such as Mine2g gypsum which have a mean particle size below 0.5mm and 99% passing 2mm mesh will have a high solubility compared to standard natural gypsum.
Recycled gypsum, superfine lime and dolomite however are a different story. Recycled gypsum from plaster board has been refined to very small particles in the production of the plaster board, making it far more soluble than raw gypsum, in other words, you can apply it just before cropping and get a good result.
In the case of Superfine lime and dolomite against aglime, you will achieve a much quicker response. The smaller particles are the secret to quicker results and of course higher yielding crops.
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Road Training Gypsum Throughout QLD
Pacific Fertiliser is current supplying some large volumes of gypsum in QLD.
To cater for the demand we had to assemble some of our trailers into a road train.
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Gypsum Comparison Results 2015
Pacific Fertiliser recently undertook detailed research into the bulk agricultural gypsum products available on the eastern seaboard of Australia. This research continues on from the NSW Department of Primary Industries work in 1996 which was reported in the AgFact AC.10 (Agdex 514) document.
The gypsum samples were obtained from various agricultural gypsum sources either ex mine pit or from product landed on the farm. Pacific Fertiliser and REGYP gypsum products were also tested during the research and these were taken from finished product stockpiles.
The main items we tested for were gypsum purity, sizing and solubility. The results enable us to benchmark our products against others, but also to help customers in their evaluation of which gypsum to use when they are looking to purchase gypsum for their farm or project.
When testing for gypsum solubility, we employed the method used in the AgFact AC.10 paper. This test method is more indicative of what happens in the paddock rather than the normal method to test solubility, where gypsum samples are finely ground up before being analysed. Due to the river bed gypsum having higher salt contents we had to adjust the solubility results to reflect the true gypsum solubility.
If you have any questions or would like to view the full report please feel free to call 1300473497 or visit our website www.pacificfertiliser.com
Test Laboratory:
Pacific Fertiliser commissioned Cement Australia to do the gypsum analysis work for our research. Cement Australia’s laboratory in Darra QLD is NATA approved and very proficient and experienced in testing gypsum and other minerals.Test Methods:
Gypsum Purity:- Calculated from Sulphur (S) content. (18.6% Sulphur is 100% CaSO4.2H2O)
Sulphur Content: – X-ray fluorescence (XRF)
Total Calcium:- XRF
Total Oxides:- XRF
Moisture Content:- AS 4489.8.1, modified for gypsum by limiting heat to 40ºC for 24 hrs.
Particle Size:- Analysis Dry sieve
Gypsum Solubility:- As per the method used in the NSW AGFACTS AC.10. Solubility is expressed as electrical conductivity (EC) of solution obtained by adding the equivalent of 10g of pure gypsum (CaSO4.2H2O) to 1 litre of demineralised water. This solution is gently shaken (20 times end over end) and placed in a centrifuge for 10 minutes. The unit of electrical conductivity is dS/m.
Adjusted solubility:- Pacific Fertiliser added a modified column to the analysis results in the above table, to allow for the effect on electrical conductivity in the gypsum samples with a higher salt content. The measured electrical conductivity (EC) of a solution is influenced by the concentration and composition of dissolved salts. In the 1996 results Bourke solubility was 0.4 dS/m and Balranald was 1.0 dS/m.Please download a full copy of the research report here (13mB).
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Gypsums Ain’t Gypsums
We recently have undertaken a large study to bench mark different gypsum products from different mines and processing plants to ascertain their quality in a 3rd party laboratory. See the results from the study where we used a NSW Ag Facts method to test gypsum solubility. Study link http://pacificfertiliser.com/gypsum-comparison-results/846/. We also have a free Gypsum Cost Comparison spreadsheet we can send you, which can assist you to compare your various gypsum quotes from various suppliers in an apples with apples scenario.
For many reasons gypsum can be considered to be a farmer’s best friend. Gypsum or CaSO4.2H20 is an excellent source of both Calcium and Sulphur which are essential for both yield and grain quality. However gypsum benefits go much further. As a soil amendment it helps improve the physical properties of soil, such as water retention, permeability, water infiltration, drainage, aeration and structure providing a better environment for the plant roots. The calcium can also displace harmful sodium in the soil, essential to the sustainability of most irrigated soils.
Agricultural gypsum products can come in many forms like:
- Natural Gypsum – Mined
- Recycled from plasterboard – Super Ag Gypsum
- Flue Gas scrubbing on power stations – FGD Gypsum
- By-product of Fertiliser manufacture – Phospho Gypsum (from the old super plants – not available anymore)
All of these variants of CaSO4.2H20 have calcium as calcium and sulphur as sulphate. When comparing any gypsum products you should consider the following items. Gypsum Purity (% of CaSO4.2H20), calcium and/or sulphur content depending on requirements, Solubility, Salts, Heavy metals (such as lead or cadmium), Contaminants (such as paper).
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Another Gypsum Shipment into Sydney
Pacific Fertiliser’s is hard at work carting 30,000 tonne mined gypsum away from port.
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Organic Soil Amendments and Fertiliser
Pacific Fertiliser sells various types of organic soil amendment products.
These include:
– Ag Lime (calcium source and pH adjustment)
– Gypsum (source of calcium and sulphur)
– Soft Rock Phosphate (source phosphorous and calcium with some pH adjustment)
– Dolomite (source of calcium and magnesium with pH adjustment)
– Guano
– Fish meal
– RPR Reactive Phosphate Rock
– Fishmeal
– Sulphate of Potash (SOP)
– Muriate of Potash (MOP)
– Kieserite (Magnesium sulphate)
– Magnesium Oxide
– Magnesium Carbonate
– Humates (brown coal fines)
– Liquid fulvic and humic acid
– Blends of the above products and trace elementsPacFert does not have organic certification for its products, but because they are natural minerals mined from the ground they are deemed organic. Any processing by Pacific Fertiliser is to grind, classify or package the products for agricultural applications, which means the natural products are still suitable for organic applications/farms.
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Pacific Fertiliser Sales
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To avoid confusion between natural mined products and recycled gypsum products, we have started PACIFIC FERTILSER to separate the natural products from REGYP. From July 1 2013, sales will go through the following process:
- PACIFIC FERTILISER – from 1 July 2013, sells all the natural mined products inc mined gypsum, phosphate rock, lime, bentonite and dolomite ontop of fertiliser sales;
- REGYP – will continue to sell all of the recycled products inc bulk recycled gypsum, compost & manures.
Contact details for REGYP remain as:
Phone – 1300 473 497
Fax – 02 80786 3047
Email Orders/Sales – orders @ regyp.com.au
Email Accounts – accounts @ regyp.com.au
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