News
Calculating landed cost of gypsum
To obtain the total cost of supply and application of gypsum per tonne of pure CaSO4.2H2O, the following information is required: A. the landed cost at the farm gate of gypsum per tonne (gypsum
Choosing which gypsum to buy
In deciding which gypsum to buy, the main points to consider are: the total cost of supply and application of gypsum, expressed on the basis of pure CaSO4.2H20 (Regyp - 90%+ pure), how quickly
Testing soils for gypsum response
There are three main ways in which soils can be tested for likely gypsum response. These are: 1. On-farm tests, these are the quickest but least reliable means of assessing likely gspsum response. The simplest
Waste avoidance and resource recovery
The NSW Waste Avoidance and Resource Recovery Report (WARR) 2008, stated that by increasing the cost of disposal of each tonne of waste, the expanded levy provides an incentive to provide recycling and resource recovery
C&D waste composition
In 2004 NSW DECC also undertook studies to estimate the the quantities and composition of mixed C&D waste disposed at Sydney landfills. Plasterboard waste was estimated to be around 4 percent of the total C&D
Avoid landfilling plasterboard waste
Gyprock & Plasterboard Waste is 100% Recyclable The ReGyp recycling solution assures that the gyprock and plasterboard waste is 100% recyclable. The recycled gypsum powder which makes up to 94% of the waste, can used
Hydrogen sulfide gas in landfills
In the US and in Europe plasterboard waste disposed of in landfills have allegedly created the dangerous Hydrogen Sulfide Gas (H2S). Hydrogen sulfide is a colourless, flammable, poisonous gas that smells like rotten eggs. Hydrogen
REGYP Contacts
You have visited the REGYP News Room page, to find more detail on REGYP's waste services and gypsum products please visit the website www.regyp.com.au or find us at: Phone ph: 1300 473 497 fax:
Recyclable Plasterboard Products
Boral Plasterboard products REGYP recycles: Plasterboard: Regular, echostop, enviro plasterboard, unispan, wetarea, firestop, shaftliner, wetarea firestop, soundstop, enviro soundstop, impactstop, square edge, recessed edge, RE, SE. Cornice: Classiccove sydney, classiccove new york, classiccove manly, classiccove
Gypsum Grades
Grade 1 : Gypsum must contain a minimum of 15.0% sulphur (S) and a minimum of 19.0% Calcium (Ca). [Regyp gypsum] Grade 2 : Gypsum must contain a minimum of 12.5% sulphur (S) and
Trial Crusher
ReGyp conducted a trial using the Neuenhuser Screw Mill S380-EMM for processing plasterboard waste. The result produced an unsatisfactory recycled gypsum product for resale. It was also perceived that the O&M cost for the machine
Dealing with gypsum waste in the US
Article - RecyclingToday - DEALING WITH GYPSUM - 8/6/2001 There is a lot of plasterboard produced in the US. In total, about 15 million tons of new plasterboard is produced each year (2000). California alone
Gypsum waste is considered to be very problematic in the landfill
Potentially lethal hydrogen sulfite gasses (H2S) will develop in the landfill - Consequently gypsum waste should not be landfilled in the same landfill cell as organic/biodegradable waste; mono-cells for gypsum are required for safe landfilling.
Testing gypsum purity
Steps to test gypsum purity: 1. Determine SO3 and then divide by 0.8333 to get SO4, 2. Determine CaO and then divide by 1.4 to get Ca, 3. After checking that % SO4 x
Solution and aerial grade gypsum trials
ReGyp trials recycled gypsum in Cowra for the manufacture of solution grade and aerial grade gypsum products, with great success. Applications of solution grade gypsum (gypsum in suspension), provides a very even spread of the fine
ReGyp trials a pilot plant in Cowra for recycling plasterboard waste.
ReGyp trials a pilot plant in Cowra for recycling plasterboard waste. The results were a success with the construction of a large scale plant under construction. You have visited the REGYP News Room, for more
