• What is foundry sand? - Solex

    May 07, 2020· The sand is bonded to form molds or patterns used for ferrous (iron and steel) and non-ferrous (copper, aluminum, brass) metal castings. Shake-out sand from completed metal casting are often reclaimed back into the foundry sand process. CASTING METHODS. Green Sand is silica sand with minor ingredient additives such as bentonite clay, water, and ...

  • (PDF) Foundry sand reclamation-theory and industrial practice

    Production of 1 metric ton of casting from ferrous alloys generates circa 1 metric ton of waste, which due to containing certain amounts of harmful and dangerous compounds should undergo a...

  • Archives of Foundry Engineering - Home ICM

    This is the case of foundry which most frequently perform heavy casting in which for the construction of chemical hardening mould is used, both the quartz sand and chromite sand. After the dry reclamation of used moulding sand, both types of sands are mixed in various ratios resulting that in reclaimed sand silos, the layers of varying content ...

  • [PDF] Application Of Foundry Waste Sand In Manufacture Of

    ----- • Used foundry sand is a high volume industrial waste that can be more widely reused as an alternative to landfill disposal. A brief look at three factors supports this finding: (1) foundries generate substantial volumes of used sand that is non-hazardous, consistent in composition, and available in ample supply; (2) foundry sand ...

  • Physical and chemical characteristics of after-reclamation ...

    The paper presents the results of investigations of physical and chemical properties of after reclamation dust that is generated in the foundry industry. Universally applied mechanical reclamation processes of spent moulding sands generate large amounts of after-reclamation dusts containing mainly rubbed spent binding agents and quartz dusts.

  • Influence of a Reclaimed Sand Addition to Moulding Sand ...

    With the world production of 30 million Mg (in 2013) of iron cast- ings made with chemically bonded moulding sands and with the reclamation rate of about 40–50 %, we can assume that each year about 15–18 million Mg of used mould sand must be managed outside the foundry or …

  • RECLAMATION OF USED SANDS IN FOUNDRY PRODUCTION - …

    In the case of reclamation of used foundry sands with resin binders additionally thermal reclamation tests were performed.

  • Wet reclamation of sodium silicate used sand and ...

    Abstract:The massive amount of sodium silicate in the used sand was a pollution source, especially in the waste water from the wet reclamation of used sand. A new process of wet reclamation by biologically treating the waste water produced during the wet reclamation process of used sand was studied in the paper.

  • Factors influencing selection of effective reclamation ...

    Download PDF (372 KB) Abstract. The paper dealt with such problems of scientific and development research concerning the reclamation of used foundry sands as: management of used sands generated in foundry production, recommendation of selection of effective reclamation techniques and assessment methods of the reclaimed material quality ...

  • Influence of a Reclaimed Sand Addition to Moulding Sand ...

    0.8–1.0 Mg of waste foundry sands. With the world production of 30 million Mg (in 2013) of iron cast-ings made with chemically bonded moulding sands and with the reclamation rate of about 40–50 %, we can assume that each year about 15–18 million Mg of used mould sand must be managed outside the foundry or stored (Modern Casting 2014 ...

  • Risk Assessment of Spent Foundry Sands In Soil-Related ...

    Risk Assessment of Spent Foundry Sands In Soil-Related Applications Evaluating Silica-based Spent Foundry Sand From Iron, Steel, and Aluminum Foundries Prepared by: U.S. EPA Office of Resource Conservation and Recovery Economics and Risk Assessment Staff U.S. Department of Agriculture-Agricultural Research Service The Ohio State University and

  • Modern Sand Reclamation Technologies for Economy ...

    Attrition Reclamationprocess is capable of converting, at economic rate, the used recycled sand with low binder content, without foreign material and with even grain size distribution - all that are required for producing good quality mould / core. The reclaimed sand is delivered at sufficiently low temperature useable for core / mould making.

  • A MODEL FOR FOUNDRY MOLDING EQUIPMENT

    Sand Handling: Reclamation, Preparation, 27 and Distribution ... Small Production Foundry 0-3 K/L Ratios; Overhead Sand Delivery Costs Included, 108 ... D-4 Production Function for Small Production Foundry - 109 Non-Optimal Solutions LIST OF TABLES No Page 1 Alternate Pattern Materials 23 2 Comparison of Melting Equipment for a Grey Iron 35 Foundry

  • Process for recovering sand and bentonite clay used in a ...

    Method of improving the properties of reclaimed sand used for the production of foundry moulds and cores: 2000-01-18: Toussaint et al. 523/142: 5992499: Method for cold reclamation of foundry sand containing clay: 1999-11-30: Tordoff et al. 164/5: 5163562: Process for reclaiming bentonite and carbon particles from used foundry sand: 1992-11-17 ...

  • (PDF) Reclamation of used sands in foundry production

    Download full-text PDF. ... allowing replacement of fresh quartz sand consumption in foundry production by the recovered sand. ... development research concerning the reclamation of used foundry ...

  • Evaluation of Sand Quality in Thermal Sand Reclamation ...

    This study focuses on the evaluation of sand quality by considering physical and chemical characteristics of molding sand, which is reclaimed by thermal reclamation method. Electric fuel and fluidization mechanism is used in thermal reclamation system.

  • Used Sand Reclamation: Environmentally Beneficial and ...

    Thermal reclamation produces sand with application properties that differ only marginally from those of new sand. Used in a coldbox process, the reclaimed sand achieves very good - strength values and also meets all other expectations placed on high-quality foundry sand.

  • Investigations of physicochemical properties of dusts ...

    of disposal of used foundry sand, make the reclamation and re-use of sands a matter of increasing importance to reduce the quantity of sand that must be disposed of at waste sites [3-5]. Two types of reclamation are commonly used, mechanical attrition and thermal. The most commonly practiced method because of its lowest cost is mechanical.

  • SAND, SAND ADDITIVES and SAND PROPERTİES

    • Foundry sands are composed almost entirely of silica (SiO2) in the form of quartz. Some impurities may be present, such as ilmenite (FeO‐TiO2), magnetite (Fe3O4), or olivine, which is composed of magnesium and ferrous orthosilicate [(Mg,Fe) SiO4]. Silica sand is used

  • In house reuse and reclamation of used foundry sands with ...

    Jul 18, 2013· (2004). In house reuse and reclamation of used foundry sands with sodium silicate binder. International Journal of Cast Metals Research: Vol. 17, No. 1, pp. 51-56.

  • foundry sand reclamation plant manufacturers

    Thermal Sand Reclamation Of Foundry Sand Harrison ... Coupled with mechanical reclamation plants, the thermal sand reclamation plant allows us to recover up to 80% of the sand used within the foundry for the production of aluminum castings which is then re-used.

  • THERMAL RECLAMATION OF THE USED MOULDING SANDS

    thermal reclamation suitability for the used moulding sand (furan) at various stages of its circulation in the foundry plant: moulding sand knocked-out from the mould and the reclaim obtained by the mechanical rec-lamation. The effects of undertaken investigations were verified by several criteria of the reclaim assessment:

  • CA2161897C - A method of improving the properties of ...

    Particulate refractory aggregate aggregate elutab1e alkali is treated with a particulate active clay having a particle size of less than 0.5 mm in order to reduce the level of the elutable alkali. Sand recovered from spent foundry moulds and cores produced from alkaline binders can be treated to reduce its elutable alkali content and then recycled for further foundry use.

  • The State of Art of the Mechanical Reclamation of Used ...

    The reclamation understood as the treatment of used refractory casting materials, allowing the reclamation of at least one of the components of properties similar to the ones of the fresh component and its reuse for the production of moulding and/or core sands, is being done during the final reclamation.

  • Used Sand Reclamation: Environmentally Beneficial and ...

    The raw material for thermal reclamation is usedcore sand, which is delivered by silo truck. Six silos, with a storage capacity of 350 tons, are available for storing used sand. In addition to this used sand, it is also possible to process broken cores. They are first …

  • Analysis of Chemically Bonded Sand Used for Molding in …

    Analysis of Chemically Bonded Sand Used for Molding in Foundry . Digvijay A. Mhamane1, Suyog B. Rayjadhav2 and Vasudev D. Shinde3. 1&2Junior Research Fellow, 3Professor . 1&2SMART Foundry 2020-DKTE, 3DKTE, Kolhapur, Maharashtra, India . E-Mail: [email protected] . Abstract - In casting industry the selection of mold material

  • Modern Sand Reclamation Technologies for Economy ...

    HOW RECLAMATION IS DONE Sand reclamation can be termed as the process of reconditioning of used/demoulded sand in a foundry without lowering its original properties, which are particularly required for foundry application. Reclamation may be done by various methods- namely: z Attrition (Mechanical) Reclamation z Thermal Reclamation z Wet ...

  • US6015846A - Method of improving the properties of ...

    Particulate refractory aggregate containing elutable alkali is treated with a particulate active clay having a particle size of less than 0.5 mm in order to reduce the level of the elutable alkali. Sand recovered from spent foundry moulds and cores produced from alkaline binders can be treated to reduce its elutable alkali content and then recycled for further foundry use.

  • Unconventional methods of reclamation of used moulding …

    Reclamation of used moulding and core sands is defined as a treatment of waste refractory materials allowing to recover at least one component of properties similar to the properties of the new 30 ARCHIVES of FOUNDRY ENGINEERING Volume 10, Issue 3/2010, 29-34 component and to reuse it for casting moulds and core production.

  • [PDF] Foundry Sand Utilisation in Concrete Production ...

    This paper reports results on the properties of concrete containing waste foundry sand (WFS). Fine aggregate was replaced with 0- WFS. The water to cement for all mixes was kept constant. Fresh and hardened properties of concrete were investigated. Hardened properties included water absorption, strength, ultrasonic pulse velocity (UPV) and length change. Testing on hardened properties was ...

  • US5706879A - Process for the reclamation of used foundry ...

    An apparatus for reclaiming used foundry and molding sand comprises a container having a cylinder sidewall and at least one bottom wall or tray is arranged on a sand reclamation device for the mechanical cleaning of grains of sand, particularly organically and inorganically bonded molding sands. A central, hollow drive shaft is arranged in the cylinder and is supported for rotation.

  • Foundry tools and

    BACKING SAND •Backing sand or floor sand is used to back up the facing sand and is used to fill the whole volume of the molding flask. •The backing sand is sometimes called black sand because that old, repeatedly used molding sand is black in color due to addition of coal dust and burning on coming in contact with the molten metal. 33

  • WASHINGTON, D.C. 20469

    sand and the nature of typical foundry sand reclamation activities. Used foundry sands are generated as solid wastes after being separated from the castings at the shakeout table. At this point, the used sand contains contaminants, such as chunks of brass, fines, and hard lumps of sand, that must be removed from the sand

  • FOUNDRY GREENSAND: USE AND RECLAMATION

    4.3 Secondary reclamation 9 5 Sand-to-liquid metal ratios 10 5.1 Sand-to-liquid metal ratios in iron foundries 10 5.2 Sand-to-liquid metal ratios in copper foundries 11 6 Use of binder systems for coremaking 12 7 Metal yield 13 8 Waste sand disposal 14 9 Sand action plan 15 9.1 Sand mix costs and use 15 9.2 Used sand disposal/reclamation 16 ...

  • Method of reclaiming foundry sand - ANDREWS; ROBERT S. L.

    This invention relates generally to the treatment of used foundry sands, and more particularly, to the reclamation of foundry sands including both clay-bonded and organic resin-bonded sands and mixtures thereof. Foundry sand is commonly used to make core molds into which ferrous and non-ferrous metals are cast.