公开(公告)号：US20220203404A1

公开(公告)日：2022-06-30

申请号：US17605115

申请日：2020-04-24

申请人： FINN RECYCLING OY

发明人： Toni WESIN ,  Jukka NIEMINEN

IPC分类号： B07B13/04 ,  B07B1/00 ,  B07B4/00 ,  B09B3/30

摘要： Power plant boiler sand comprising a clay-based binder film (3) on the surface of a grain of sand (2). In addition, a method and apparatus for producing power plant boiler sand.

公开(公告)号：US20240024930A1

公开(公告)日：2024-01-25

申请号：US18255323

申请日：2020-12-03

申请人： FINN RECYCLING OY

发明人： Jukka NIEMINEN ,  Toni WESIN ,  Kalle KEKÄLÄINEN

IPC分类号： B08B7/04 ,  F27B7/38 ,  B08B7/00 ,  B08B15/00 ,  B08B7/02 ,  B08B13/00 ,  B09B3/40

CPC分类号： B08B7/04 ,  F27B7/386 ,  B08B7/0071 ,  B08B7/0092 ,  B08B15/00 ,  B08B7/02 ,  B08B13/00 ,  B09B3/40 ,  B08B2215/00

摘要： A system (1), and method for cleaning sand, which system (1) is a modular system and comprising at least a cleaning module (2). The cleaning module (2) comprising a cleaning apparatus (22) comprising an oven (5), and a cooling drum (6). The system (1) is configured to thermally clean the sand in the heated oven (5), remove gases and fine fraction from the thermally cleaned sand, cool the thermally cleaned sand in the cooling drum (6), and remove gases and fine fraction from the cooling drum (6).

公开(公告)号：US20230415167A1

公开(公告)日：2023-12-28

申请号：US18250592

申请日：2021-10-25

申请人： Finn Recycling Oy

发明人： Jukka NIEMINEN ,  Toni WESIN ,  Kalle KEKÄLÄINEN

IPC分类号： B03B9/00 ,  B09B3/35 ,  B09B3/40 ,  B22C5/04 ,  B22C5/06

CPC分类号： B03B9/00 ,  B09B3/35 ,  B09B3/40 ,  B22C5/04 ,  B22C5/06

摘要： In the disclosed solution, a method is described for producing sand used in industry, in which method dis-carded power plant and/or foundry sand is processed into sand for use in products of the construction industry and/or into foundry sand by means of pre-treatment, drying, and after-treatment. In addition, an apparatus is described for producing sand used in industry, and use of discarded power plant and/or foundry sand in products of the construction materials industry or in foundry industry.

公开(公告)号：US20210094090A1

公开(公告)日：2021-04-01

申请号：US17032473

申请日：2020-09-25

申请人： Finn Recycling Oy

发明人： Jukka NIEMINEN ,  Timo KRONQVIST ,  Toni WESIN

IPC分类号： B22C5/10 ,  B22C5/08 ,  B22C5/06 ,  B22C5/18

摘要： An apparatus and a method for cleaning sand used at a foundry, wherein sand to be cleaned is screened by a screening apparatus. The screened sand and at least one liquid mixture is fed into an abrasive apparatus. After that, the screened sand is rubbed by the abrasive apparatus. The rubbed sand and at least one liquid mixture is added to a water separation screen for separating a water blend from the rubbed sand. Finally, the separated sand is transferred into an oven and cleaned thermally by rotating the separated sand in the heated oven.