gypsum recycling Articles

  • Wallboard goes green as firms recycle gypsum

    Gypsum wallboard — the ubiquitous material found in homes, offices and other buildings — is finding new life when recycled as a soil additive, especially for farm crops. Rather than seeing wallboard being dumped in landfills, companies such as Quality Soil Amendments (QSA) in California and Agri Marketing, Inc., in Pennsylvania have built successful businesses recycling drywall, then reselling ...

  • Use of recycled plasterboard in unfired clay-gypsum blocks

    Executive summary Over one million tonnes of waste plasterboard are estimated to be produced each year in the UK from construction and demolition activities. Most of this waste is currently sent to landfill, even though it can easily be recycled. WRAP is working to divert plasterboard waste from landfill by seeking to overcome the barriers to plasterboard recycling. One area of its work is to ...

  • Plasterboard collection trials at household waste recycling centres

    Executive summary Over one million tonnes of waste plasterboard are estimated to be produced each year in the UK from construction and demolition activities. Most of this waste is currently sent to landfill, even though it can easily be recycled. WRAP is working to divert plasterboard waste from landfill by seeking to overcome the barriers to plasterboard recycling. One area of its work is to ...

  • Mining Plant Machines Used Mineral Solution And Recycling Plant

    Mining Plant Machines Used Mineral Solution And Recycling Plant Quarry & Mining in SBM Gold Mining Plant in SBM is used for crushing & milling project in Chile construction & quarry & mining processing. The series ...


  • Napa valley recycler’s growth prompts move to new grinder: Tub grinder provides much-needed increase in productivity, opens doors for additional work

    Recycling professionals realize — indeed they sometimes count on the fact — that very little in the industry stays the same. Customers come and go. Markets develop or dry up. Prices fluctuate, often wildly. The consummate recycling professional with an eye on success is one who can anticipate these changes to the best of his or her ability and then react accordingly. For Bob Pestoni, that has ...


    By Morbark, LLC

  • The Atritor Turbo Separator

    Due to the changes in restrictions and the increase in the cost of landfill, the Gypsum Industry is looking for an alternative to handle the estimated 300,000 tons of new build plasterboard waste generated every year. The traditional way of separating gypsum from its backing is to use hammer mills, in conjunction with sieves, which is costly and generates a lot of dust.Atritor offers reprocessing ...


    By Atritor Limited

  • Pulp & Paper Mill #1

    Problem: This company manufactures Gypsum Wallboard on a one-cylinder machine. It furnishes recycled paper (box, cardboard and newsprint) and it operates 340 days/year. The system holds 100,000 gallons at 120°F. It's objective was to reduce sewer loading. Solution: Hydrocal installed a CAF-1 50 unit and shut down the original pumps. The plant now shows ...


    By HydroCal Inc.

  • Sample preparation for the analysis of secondary fuel in cement plants

    Secondary fuel can be a very inhomogeneous sample, containing all types of polymers, paper, wood and low fractions of metal. Also recycled wood or parts of automobile tires might be used as secondary fuel. Before using it as fuel in the production of cement, several chemical analyses are necessary as quality control. Cement is made by heating limestone (calcium carbonate), with small quantities ...


    By Fritsch Milling and Sizing

  • Plasterboard waste recovery from smaller building sites

    Most methods for recovering waste plasterboard from construction sites rely on it being segregated on site into adedicated collection container, such as a skip, bin or bags.  This can be difficult for smaller building sites where spacefor these containers may be limited, and the quantities of plasterboard waste are small thus reducing the costeffectiveness of recovery. However, many small ...

  • The Variety Kinds of Fote Briquette Machine

    To make our life more convenient and efficient, Fote Machinery produces many machines to meet the satisfactory of people. For example, Fote briquette machine which is widely used in coal, chemical. And there are many kinds of briquette machine, such as coal ball press machine, coal briquette press machine, dry ...


    By Fote Machinery

  • Recovering Valuable Chemicals from Air Emissions

    Air emissions in many cases are a waste of valuable natural resources that should have become useful chemicals. In some cases the economic payback from recycling/reuse of air emissions can be almost as much a motivation to control air pollution as government regulations. Examples of recycling and reuse of air emissions are sulfur oxides emissions that can be made into sulfuric acid, cement ...


  • Treatment of iron(II)-rich acid mine water with limestone and oxygen

    The main components of acid mine water are free acid, sulphate, and Fe2+. Limestone is the most cost-effective alkali that can be used for neutralization. The purpose of this investigation was to identify conditions where Fe2+ is removed with limestone and simultaneously oxidized with oxygen to Fe3+, in a polyvinyl chloride pipe under pressure. Gypsum ...


    By IWA Publishing

  • Denmark’s Near-Zero-Waste Wonder

    Has this Danish community found the formula for environmentally friendly industry? When we look closely at systems in nature — coral reefs or rainforests, for instance — we see something we don’t often see in human systems: mutually beneficial relationships and energy flows among the various elements, such as air, water, rocks, soil, and plant and animal life. If we ...


    By Ensia

  • Cement Manufacturing Industry - Pollution Prevention Guidelines

    Introduction Pollution Prevention Guidelines to provide technical advice and guidance to staff and consultants involved in pollution-related projects. The guidelines represent state-of-the-art thinking on how to reduce pollution emissions from the production process. In many cases, the guidelines provide numerical targets for reducing pollution, as well as maximum ...


    By The World Bank

  • Cementatious considerations for medical waste solidification - safety online

    The most common cause for alarm in the medical field pertaining to waste disposal is the exposure of the worker to infectious wastes and contraction of diseases from these wastes. With the increased risk of exposure to blood-borne pathogens in handling body fluids and disposal of items that have been tainted by these fluids, awareness and education for the prevention of percutaneous wounds is the ...


  • Cementatious considerations for medical waste solidification

    The most common cause for alarm in the medical field pertaining to waste disposal is the exposure of the worker to infectious wastes and contraction of diseases from these wastes. With the increased risk of exposure to blood borne pathogens in handling body fluids and disposal of items that have been tainted by these fluids, awareness and education for the prevention of percutaneous wounds is the ...

  • Cementatious considerations for medical waste solidification - infection control

    The most common cause for alarm in the medical field pertaining to waste disposal is the exposure of the worker to infectious wastes and contraction of diseases from these wastes. With the increased risk of exposure to blood borne pathogens in handling body fluids and disposal of items that have been tainted by these fluids, awareness and education for the prevention of percutaneous wounds is the ...


  • MRF design challenges with VEOLIA environmental services

    Machinex partnered with Veolia Environmental Services to design a C&D processing facility in Quebec City, Quebec. Capacity was a primary concern when Veolia Environmental Services (ES) sought to equip its material recovery facility (MRF) for construction and demolition debris in Quebec City, Quebec. The company selected technology for the facility based on its high processing ...


    By Machinex Industries Inc.

  • What Are the Benefits of Using a Mechanical Vibrating Separator for Bulk Solids?

    Mechanical vibrating separators are one of three main types of industrial screening machines, along with rectangular and circular screeners. While mechanical separators are generally considered to be at the lower end of the technological spectrum, they offer several advantages over other types of machines in certain bulk solid screening applications. Advantage #1: Cost With their ...


    By VibraScreener Inc.

  • Cementatious Considerations for Medical Waste Solidification

    The most common cause for alarm in the medical field pertaining to waste disposal is the exposure of the worker to infectious wastes and contraction of diseases from these wastes. With the increased risk of exposure to blood borne pathogens in handling body fluids and disposal of items that have been tainted by these fluids, ...


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