Pumps – Ambulant – body supported – or with carrying handle
Patent
1998-09-10
2000-10-10
Yuen, Henry C.
Pumps
Ambulant, body supported, or with carrying handle
417900, 241 81, F04B 5300, F04B 1502
Patent
active
061295205
DESCRIPTION:
BRIEF SUMMARY
FIELD OF THE INVENTION
The present invention relates generally to a mobile pumping station used for moving a mineral deposit and relates particularly, though not exclusively, to a track mounted pumping station. Typically, the present invention relates to a track mounted pumping station having a turntable rotatably mounted to a mobile base frame.
BACKGROUND OF THE INVENTION
Currently there are at least two techniques for dredging or excavating sand or other mineral deposits. The first of these techniques involves onshore removal of the mineral using an excavator which then loads a truck. The truck transports the mineral for dumping or processing elsewhere. For example, some mineral sands in Western Australia are currently mined using this technique and then trucked to a processing plant for concentration of titaniferous ores contained within the mineral deposit. Some of the drawbacks with this technique include: the relatively high transportation costs; the fact that trucks require expensive pavement surfaces under their wheels; problems with dust control; and expense associated with road maintenance. Furthermore, trucks have often to take a long route around obstacles, and the tipped load from the trucks then has to be handled to its end use.
Dredges have also been widely used for the removal of sand or other mineral deposits from locations where water exists in abundance. Generally, the dredge is mounted on or as a barge which is then located in water at the site of the mineral deposit. The dredge progressively excavates mineral from the beach or other mineral deposit by slewing a rotating cutter head from side to side across a face of the deposit. The cutter head excavates the mineral and a slurry pump sucks up the mineral and pumps it via a pipeline to another location, such as a mineral sand concentrating plant. However, a relatively large volume of water is transported with the mineral deposit using the slurry pump. In locations where water is scarce, the water must be recycled to a dredge pit.
The volume of water retained with the mineral cannot be accurately controlled by dredging and inevitably excessive water is often pumped with the mineral. Thus, a relatively large amount of energy is expended pumping water rather than mineral. Although a certain amount of water is required together with the mineral to provide a pumpable slurry, this ratio often cannot be accurately controlled when dredging. Consequently, pumping costs are relatively high and, particularly where the slurry is to be pumped a long distance, may be prohibitive.
SUMMARY OF THE INVENTION
An intention of the present invention is to provide a mobile pumping station which can cost effectively be used to move relatively large volumes of a mineral within a slurry at a controlled mineral to liquid ratio.
According to the present invention there is provided a mobile pumping station comprising: mineral, the slurry vessel operatively connected to a liquid supply; and the mobile pumping station can move into position adjacent a mineral deposit and a portion of the mineral deposit can then be loaded into the slurry vessel wherein said mineral portion is formed into a flowable slurry by combining liquid from the liquid supply with said mineral portion, said slurry thus having a controlled mineral to liquid ratio, and thereafter the flowable slurry discharged from the vessel via the slurry pump.
Preferably, the mobile pumping station further comprises a primary feed hopper also mounted to the mobile base frame, the primary feed hopper adapted to receive a mineral and transfer said mineral to the slurry vessel so that, in use, the primary feed hopper can be adjusted to achieve a predetermined flow of said mineral to the slurry vessel and thus the ratio of said mineral to the liquid can be controlled.
Typically, the pumping station further comprises feeding means movably coupled to the base of the primary feed hopper so that, in use, the feeding means can be adjusted to control the flow of mineral to the slurry vessel. More typically, the fe
REFERENCES:
patent: 3413038 (1968-11-01), Frazier
patent: 4303506 (1981-12-01), Finlay
patent: 5087379 (1992-02-01), Morton et al.
patent: 5441206 (1995-08-01), Schade et al.
Gimie Mahmoud M
Hydraplant Equipment Pty Ltd
Yuen Henry C.
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