Zenith copper mining machine for sale - 1 views

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  #1 betsy stone on 16 Jul 14

   

  In this regard it may be noted that grinding agents such as stearic acid heretofore used in wet-milling aluminum flake pigments dissolve in the hydrocarbon solvent used as the wet-milling vehicle; ie the vehicle acts as a solvent for the stearic acid, although in some cases not all the stearic acid may dissolve. The present fluorocarbon resin grinding agents (e.g., polytetrafluoroethylene), however,copper mining equipment do not dissolve in the hydrocarbon solvent wet-milling vehicle, but instead remain in suspension therein, and hence the vehicle does not act as a solvent but merely serves as a carrier for the fluorocarbon resin.
  
  The grinding of aluminum flakes by the method of the present invention may be carried out in conventional equipment and in accordance with conventional procedures for wet-milling aluminum flakes, except that a fluorocarbon resin (for example polytetrafluoroethylene) is used in place of or in addition to the grinding agents heretofore employed,granite quarry. The product thereby obtained is a flake aluminum pigment having a coating of the fluorocarbon resin used, e.g. a coating of polytetrafluoroethylene. This product is found to have superior resistance to corrosion, such as attack by hydrochloric acid, apparently due to the protective effect of the present coating. Either a leafing or non-leafing product may be obtained by varying process conditions; for example, a. leafing product can be made by use of supplemental grinding agents such as stearic acid in conjunction with a fluorocarbon resin or a non-leafing product can be made by omitting such agents and using the fluorocarbon resin alone as grinding agent.
  
  Other examples of metals made in flake form and to which the present invention is applicable include gold, iron, stainless steel, nickel, tin, chromium, lead, bismuth, and various alloys of these metals.Further features and advantages of the invention will be apparent from the following specific examples of production of flake metal powders in accordance with the present method. In these examples, percentage values (where given) of grinding agents used in milling metal powder feeds refer to the weight of grinding agent supplied to the mill, expressed as a percent of the weight of the powdered metal feed.

   

  <div class="cArrow"> </div><div class="cContentInner">In this regard it may be noted that grinding agents such as stearic acid heretofore used in wet-milling aluminum flake pigments dissolve in the hydrocarbon solvent used as the wet-milling vehicle; ie the vehicle acts as a solvent for the stearic acid, although in some cases not all the stearic acid may dissolve. The present fluorocarbon resin grinding agents (e.g., polytetrafluoroethylene), however,<a rel="nofollow" href="http://www.lightcrusher.com/solutions/copper-mining-equipment.html">copper mining equipment</a> do not dissolve in the hydrocarbon solvent wet-milling vehicle, but instead remain in suspension therein, and hence the vehicle does not act as a solvent but merely serves as a carrier for the fluorocarbon resin. <br /> <br /> The grinding of aluminum flakes by the method of the present invention may be carried out in conventional equipment and in accordance with conventional procedures for wet-milling aluminum flakes, except that a fluorocarbon resin (for example polytetrafluoroethylene) is used in place of or in addition to the grinding agents heretofore employed,<a rel="nofollow" href="http://www.lightcrusher.com/solutions/granite-quarry.html">granite quarry</a>. The product thereby obtained is a flake aluminum pigment having a coating of the fluorocarbon resin used, e.g. a coating of polytetrafluoroethylene. This product is found to have superior resistance to corrosion, such as attack by hydrochloric acid, apparently due to the protective effect of the present coating. Either a leafing or non-leafing product may be obtained by varying process conditions; for example, a. leafing product can be made by use of supplemental grinding agents such as stearic acid in conjunction with a fluorocarbon resin or a non-leafing product can be made by omitting such agents and using the fluorocarbon resin alone as grinding agent. <br /> <br /> Other examples of metals made in flake form and to which the present invention is applicable include gold, iron, stainless steel, nickel, tin, chromium, lead, bismuth, and various alloys of these metals.Further features and advantages of the invention will be apparent from the following specific examples of production of flake metal powders in accordance with the present method. In these examples, percentage values (where given) of grinding agents used in milling metal powder feeds refer to the weight of grinding agent supplied to the mill, expressed as a percent of the weight of the powdered metal feed.</div>

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