Synthetic Bone Ash

HISTORY

Synthetic Bone Ash was introduced in 1954 by the Baugh Chemical Company under the trade name "Mold Lubricant." Production of this product was continued by Kerr-McGee Corporation after its purchase of Baugh Chemical in 1963. Late in 1977, Kerr-McGee Corporation announced that the Philadelphia plant would be closed and production of "Mold Lubricant" would be stopped. Murlin Chemical, Inc. was formed in 1978 by two fromer Kerr-McGee employees. The technology and equipment for the manufacturing of "Mold Lubricant" was purchased from Kerr-McGee Corporation. Production of "Mold Lubricant" resumed in September 1978. Synthetic Bone Ash currently is manufactured in the Murlin Chemical plant in West Conshohocken, PA, USA. Many of the people on our staff have been involved in manufacturing "Mold Lubricant" for all three companies. Since its inception in 1978, Murlin Chemical, Inc. has introduced Synthetic Bone Ash to copper refineries world wide.

    • DESCRIPTION

      Murlin Chemical Synthetic Bone Ash is a synthetic mold release agent for use in casting non-ferrous metals. Murlin Chemical Synthetic Bone Ash is a synthetic bone mineral produced from high purity inorganic chemicals and, therefore, contains no carbonaceous residue. It has been calcined in the temperture range 1250 degrees to 1400 degrees F (680 degrees - 760 degrees C) and finely ground. All drying and calcining operations are carried out in indirect fired driers and kilns to preclude the presence of absorbed combustion residues. Because of its high purity and fine particle size, Murlin Chemical Synthetic Bone Ash has been found by actual refinery experience to be an exceptionally efficient mold release agent in the casting of copper shapes, especially wirebars. Reports from copper refineries world wide indicate that Murlin Chemical Synthetic Bone Ash is most acceptable for this purpose.

    • ADVANTAGES GAINED BY USING MURLIN CHEMICAL SYNTHETIC BONE ASH

      1. UNIFORMITY OF PROPERTIES: Murlin Chemical Synthetic Bone Ash is manufactured under carefully controlled conditions from the highest quality raw materials available. Therefore, once a refinery has established the b est way to use our product under its own operating conditions, it is expected that the material will behave uniformly.

      2. IMPROVED AVAILABILTY: Murlin Chemical Synthetic Bone Ash is manufactured from raw materials, which are readily available. Our production capacity is six tons per day and our inventory storage is maintained near 10 0 tons. Therefore, we will usually be able to ship your order the same day we receive shipping instructions.

      3. EFFICIENCY: Users of Synthetic Bone Ash have found that the quantity of mold dressing used can be reduced, up to about one half the amount necessary when using natural bone ash. They have also reported that the life of the molds is significantly longer, up to twice as long, when Synthetic Bone Ash is being used as the mold dressing.

          Note: Synthetic Bone Ash can be mixed with natural bone ash. In these cases, it is desirable to reduce the amount of mold dressing applied. This is the route used by several major copper refineries who switched from natural bone ash to the more ec onomical synthetic bone ash.

      4. DECREASED REJECTION RATE: The improved appearance of the castings obtained when using Murlin Chemical Synthetic Bone Ash will result in a decrease in the rejection rate. Refineries using Murlin Chemical Synthetic Bone Ash have found their castings look better because the surface is smoother. There are fewer holes, cracks, and other surface defects. This improved appearance is important because it makes a product much more pleasing to the customer. Very fine gau ge copper wire still is being drawn from wire bars. Defects in the wire bars, which would cause no trouble when large diameter wire is being drawn, will cause serious problems when the wire is being drawn to a very small diameter.

    • USE OF SYNTHETIC BONE ASH:

      SLURRY PREPARATION

      A slurry of the required density, usually measured in Be units, is prepared by adding 1/2 to 2/3 of the required water to the slurry mixing tank. While this water is being agitated, the desired amount of synthetic bone ash is added at a uniform rate consistant with complete dispersion of the dry solids. The slurry is then diluted to the desired density. It is preferable to have a 100 to 150 mesh screen in the transfer line between the slurry mixing tank and the spray gun feed tank. Not only does thi s screen remove any particles which might clog the spray gun, but it also aids in dispersion of the slurry. Slurries of synthetic bone ash are used at densities varying from 8 degrees Be to 24 degrees Be. It is advisable to use the lowest slurry density which will provide the protecti on and release character required for the individual refinery.

      APPLICATION TO THE MOLD

      Synthetic bone ash should be sprayed onto the molds. Both airless spray guns and air atomizing spray guns have been used successfully to apply synthetic bone ash slurry. It is essential that the compressed air use d to power an air atomizing spray gun be free of oil droplets. The presence of organic materials in the mold coating slurry will lead to defects in the castings. Every effort should be made to ensure a complete, even coating of synthetic bone ash on the mold surface.

    • PACKAGING SPECIFICATIONS

      Synthetic Bone Ash is packaged in 57-gallon fiber drums.

      Net weight: 220 lbs.

      Samples available upon request.

    • PRODUCT SAFETY INFORMATION

        PRODUCT:

      • Common name: Synthetic Bone Ash
      • Chemical name: Calcium Hydroxylapatite
      • Formula: Ca10(PO4)6(OH)2

        CHEMICAL AND PHYSICAL PROPERTIES

        TYPICAL ANALYSIS

      • CA10(PO4)6(OH)2 = 97-98%
      • CA2(P2O7) > 2%
      • B-Ca3(PO4)2 > 1%
      • Molecular weight: 1,004
      • White odorless powder
      • Solubility: Insoluble in water; neutral or alkaline media, soluble below pH 5.5

    • FIRE HAZARD

      NONE

    • HEALTH HAZARD

      Dusting. No unusual precautions are required in safe handling and use other then dust protection. Adequate ventilation and/or use of dusk mask.

    • SPILL OR LEAK PROCEDURES

      Normal clean-up. Empty to industrial sewer, or remove to dump.

    • SPECIAL PRECAUTIONS

      Avoid acids, material disintegrates at pH 5.5

    • NON WARRANTY

      The facts stated and the recommendations made herein are based on our own research or the results reported by others and are believed to be accurate, however, no guarantee of their accuracy is made, and unless otherwise expressly provided is sold without any guarantee or warranty, express or implied.

      A PRODUCT OF

      • MURLIN CHEMICAL INCORPORATED
      • BALLIGO ROAD
      • WEST CONSHOHOCKEN, PA 19428, USA