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    • 6. 发明授权
    • Differential flotation reagent for molybdenum separation
    • 用于钼分离的差示浮选试剂
    • US4575419A
    • 1986-03-11
    • US689422
    • 1985-01-07
    • John A. PetersonMohan S. SaranJoseph S. Wisnouskas
    • John A. PetersonMohan S. SaranJoseph S. Wisnouskas
    • B03D1/002B03D1/02
    • B03D1/002B03D2201/02Y10S430/165
    • A dry differential flotation reagent for molybdenum-bearing ore is disclosed comprising from about 1 to about 30 percent by weight of NaSH, 0 to 20 percent by weight of NaOH, 60 to 90 percent by weight of a mixture of sodium thiophosphates comprising, as major components thereof, Na.sub.3 PS.sub.4, Na.sub.3 PS.sub.3 O, Na.sub.3 PS.sub.2 O.sub.2, and Na.sub.3 PO.sub.3 S, with Na.sub.3 PS.sub.4 further comprising from about 15 mole percent to about 70 mole percent of phosphate mixture. The flotation reagent can be prepared by reacting P.sub.4 S.sub.10 with NaOH and NaSH in a molar ratio of about 1:16. When added to a flotation vessel containing molybdenum concentrate, the flotation reagent promotes suppression of lead and copper sulfides, even without the addition of sodium cyanide, to permit the improved recovery of molybdenum with a lower level of impurities.
    • 公开了一种用于含钼矿石的干差示浮选试剂,其包含约1至约30重量%的NaSH,0至20重量%的NaOH,60至90重量%的硫代磷酸钠混合物,其包含主要 Na 3 PS 4,Na 3 PS 3 O,Na 3 PS 2 O 2和Na 3 PO 3 S,其中Na 3 PS 4还包含约15摩尔%至约70摩尔%的磷酸盐混合物。 浮选剂可以通过使P4S10与NaOH和NaSH以约1:16的摩尔比反应制备。 当添加到含有钼精矿的浮选容器时,浮选试剂即使没有添加氰化钠也促进铅和硫化铜的抑制,以允许以较低水平的杂质改善钼的回收。
    • 7. 发明授权
    • Floating dock structure and method for fabricating the same
    • 浮动码头结构及其制造方法
    • US4260293A
    • 1981-04-07
    • US140495
    • 1980-04-15
    • John A. Peterson
    • John A. Peterson
    • E02B3/06E02B3/20
    • E02B3/064
    • A floating dock having a steel framework to the underside of which are fastened buoyant flotation bodies and to the upper surface of which is fastened a rigid imperforate sheet such as plywood. The framework is constructed of a suitable number of C-shaped structural members each of which has a uniform cross section and a uniform hole pattern therein. The hole pattern is established so that members of different lengths can be assembled to form a dock structure of virtually any shape and size. All parts of the floating dock are dimensioned so that joints between various members are staggered to provide high strength and rigidity. A method for fabricating the floating dock structure which makes possible at least partial construction before the dock structure is placed in the water and also makes possible construction by persons of moderate skill using conventional hand tools.
    • 具有其下侧的钢框架的浮动船坞是紧固的浮力浮选体,并且其上表面固定有诸如胶合板的刚性无孔板。 框架由合适数量的C形结构构件构成,每个C形结构构件在其中具有均匀的横截面和均匀的孔图案。 孔图案被建立成使得可以组装不同长度的构件以形成几乎任何形状和尺寸的对接结构。 浮动码头的所有部分的尺寸设计使得各个构件之间的接头交错以提供高强度和刚度。 一种用于制造浮船坞结构的方法,其在码头结构被放置在水中之前使得至少部分构造成为可能,并且还可以使用传统的手动工具由中等技能的人构建。