Device and method for efficiently separating ethyl tin from molten tin

{
  "publication_number": "US12385109B2",
  "country": "US",
  "kind": "B2",
  "title": "Device and method for efficiently separating ethyl tin from molten tin",
  "abstract": "A device for efficiently separating ethyl tin from molten crude tin is disclosed. The device includes grab buckets, connecting rods, an inverted T-shaped push rod, alloy legs, a hanger plate, a cylinder and a lifting ring; wherein one end of the connecting rod is fixedly connected with one side of the grab bucket, and the other end of the connecting rod is detachably connected with the bottom end of the inverted T-shaped push rod; a top flange of the inverted T-shaped push rod is detachably connected with the bottom flange of the cylinder through threads, and the inverted T-shaped push rod is powered by the cylinder to push and pull. The device has simple structure, small volume, light weight, convenient use and placement, reduced occupancy rate of production site space and flexible use; the invention adopts a remote control mode, mechanized operation, higher safety and labor saving.",
  "claims": [
    "1. A device for efficiently separating ethyl tin from molten crude tin, comprising: grab buckets, connecting rods, an inverted T-shaped push rod, alloy legs, a hanger frame, a cylinder and a lifting ring; wherein one end of the connecting rod is fixedly connected with one side of the grab bucket, and the other end of the connecting rod is detachably connected with the bottom end of the inverted T-shaped push rod; one end of the alloy leg is fixedly connected with one side of the grab bucket, and the other end of the alloy leg is detachably connected with the bottom end of the hanger frame; the cylinder is sleeved inside the hanger frame, and the cylinder is detachably connected with the hanger frame through bolts and passes through a central hole of the hanger frame; the lifting ring is fixed at the top of the hanger frame; and a top flange of the inverted T-shaped push rod is detachably connected with a bottom flange of the cylinder through threads, and the inverted T-shaped push rod is powered by the cylinder to push and pull.",
    "2. The device of claim 1, wherein the side of the grab bucket is provided with a plurality of square holes, the plurality of square holes are regularly arranged, a side length of the square holes is 20-30 mm, and a distance between two adjacent square holes is 30-50 mm; the bottom surface of the grab bucket is provided with a plurality of circular holes, the plurality of circular holes are regularly arranged, a diameter of the circular holes is 10-25 mm, and the distance between two adjacent circular holes is 10-25 mm.",
    "3. The device of claim 1, wherein a plurality of connecting rods are provided, the number of connecting rods is even, and any two connecting rods are symmetric.",
    "4. The device of claim 3, wherein the grab bucket comprises a first grab bucket and a second grab bucket, the first grab bucket and the second grab bucket are mirror-symmetrical with an inverted T-shaped push rod as a center.",
    "5. The device of claim 4, wherein a plurality of alloy legs are provided, the number of alloy legs is even, and any two alloy legs are symmetrical."
  ],
  "description_excerpt": "The present disclosure relates to the technical field of refining impurity removal in tin smelting, in particular to a device and method for efficiently separating ethyl tin from molten crude tin.\n\nThe molten crude tin produced by smelting the tin concentrate in the smelting furnace is first put into the tin-receiving forehearth in front of the furnace, and the molten crude tin in the forehearth will be layered due to the temperature reduction. In tin smelting, the liquid crude tin in the lower layer is called methyl tin, and the solidified part in the upper layer is called ethyl tin. Before the next stage of refining operation, it is necessary to separate methyl tin and ethyl tin.\n\nThe temperature of molten crude tin produced in the process of tin smelting is relatively high, generally between 950° C. and 1200° C. After entering the tin-receiving forehearth from the smelting furnace, the temperature gradually decreases, and ethyl tin with high impurities begins to precipitate on the surface. At this time, the temperature of the tin-receiving forehearth is generally between 700° C. and 900° C. In order to facilitate the separation of methyl tin and ethyl tin, reduce the amount of methyl tin entrained mechanically in the process of separating ethyl tin, and prevent the solidification of methyl tin and smooth transfer to the next refining process, the operation of separating ethyl tin must be performed at a relatively high temperature, that is, the salvaging operation of ethyl tin is started at the temperature of 700° C.˜900° C., and it is required to be completed in a relatively short time.",
  "cpc": [
    "C22B 25/08",
    "B66C 13/08",
    "B66C 3/02",
    "B66C 3/16",
    "C22B 25/02",
    "C22B 9/023",
    "Y02P 10/20"
  ],
  "ipc": [
    "B66C 3/06",
    "C22B 25/08",
    "C22B 9/02"
  ],
  "assignees": [
    "Yunnan Tin Co Ltd Tin Branch"
  ],
  "inventors": [
    "Mingjiang Wang",
    "Zhilu LI",
    "Fan Bai",
    "Haibin Yuan",
    "Chi Zhang",
    "Zhang Zhang",
    "Wanli Xu",
    "Duzuo TANG",
    "Jianwei Wang",
    "Sheng LEI",
    "Wei Mao",
    "Hongwu Jia"
  ],
  "filing_date": "2022-03-12",
  "publication_date": "2025-08-12",
  "grant_date": "2025-08-12",
  "priority_date": "2021-09-27",
  "application_number": "US-202217693326-A",
  "family_id": "78741349",
  "cited_by_count": 0,
  "citations": [
    "US2242940A",
    "US2216383A",
    "US3606435A",
    "US3881263A",
    "US4047313A",
    "US4124243A",
    "US4174131A",
    "US4807918A",
    "US4826109A",
    "US6540925B2",
    "US10473250B2",
    "US10458583B2"
  ]
}