公开(公告)号：WO1990009246A1

公开(公告)日：1990-08-23

申请号：PCT/AU1990000051

申请日：1990-02-12

Applicant: RESOURCE TREND PTY. LTD. ,  FEUERRIEGEL, Raymond, John ,  PIGGOT, Keith

Inventor： RESOURCE TREND PTY. LTD.

IPC: B07B04/08

CPC classification number: B07B13/16 ,  B07B4/08 ,  B07B11/06 ,  C22B1/00 ,  C22B11/02

Abstract: An air concentrator for dry separation of gold and other heavy minerals from alluvial deposits comprises a housing (50) having a number of open-topped chambers (52) arranged in a ring-like configuration and surmounted by a screen (14) having rings (39, 41) thereon forming annular screen beds (36). A wiper bar assembly consisting of a number of wiper arms (6, 7) radiating from a hub (1, 2) sweeps over the screen beds (36). Air under pressure is fed sequentially and cyclically to the chambers (52) by a rotary valve (28) located centrally of the ring of chambers. The deposit is fed over the hub (1, 2) and is swept outwardly over the beds (36) on the screen (14) by the wiper arms (6, 7), where it is fluidised by pulses of air from the subjacent chambers (52) enabling particles of gold and heavy minerals to settle down to the bottom of the beds (36) by gravitational stratification, and if sufficiently small, pass through the screen (14) for collection through spigots (38) in the bottom of the chambers (52).

Abstract translation: 金和其他重矿物质从冲积沉积物干燥分离的空气浓缩器包括具有多个敞口室（52）的壳体（50），其布置成环形构造并且被具有环（14）的筛网（14）所覆盖， 39,31）上形成环形筛床（36）。 由多个从轮毂（1,2）辐射的雨刷臂（6,7）组成的雨刷杆组件扫过筛床（36）。 通过位于腔室中心的旋转阀（28），将压力下的空气顺序地循环地进给到腔室（52）。 沉积物通过轮毂（1,2）进给，并通过刮水臂（6,7）向外扫过筛（14）上的床（36）上，在那里它被来自下层室的空气脉冲流化 （52），使得金和重矿物质的颗粒通过重力分层沉降到床（36）的底部，并且如果足够小，通过筛网（14）以通过在底部的顶部（38）收集 室（52）。