US 12,378,630 B2
Combined heat exchange system of flash tank and preheater for laterite nickel ore leaching
Satryo Soemantri Brodjonegoro, Dki Jakarta (ID); Kaihua Xu, Guangdong (CN); Rizky Wanaldi, Dki Jakarta (ID); Tegar Mukti Aji, Dki Jakarta (ID); Aad Alief Rasyidi Baking, Dki Jakarta (ID); Andi Syaputra Hasibuan, Dki Jakarta (ID); Piyan Rahmadi, Dki Jakarta (ID); Yaguang Peng, Dki Jakarta (ID); and Arnaldo Marulitua Sinaga, Dki Jakarta (ID)
Assigned to GEM CO., LTD., Shenzhen (CN); and PT GEM INDONESIA NEW ENERGY MATERIALS, Jakarta Selatan (ID)
Appl. No. 18/870,451
Filed by PT ESG NEW ENERGY MATERIAL, Dki Jakarta (ID); PT QMB NEW ENERGY MATERIALS, Dki Jakarta (ID); GEM CO., LTD., Guangdong (CN); and PT GEM INDONESIA NEW ENERGY MATERIALS, Dki Jakarta (ID)
PCT Filed Jun. 30, 2023, PCT No. PCT/CN2023/105026
§ 371(c)(1), (2) Date Nov. 29, 2024,
PCT Pub. No. WO2025/000494, PCT Pub. Date Jan. 2, 2025.
Prior Publication US 2025/0163536 A1, May 22, 2025
Int. Cl. C22B 3/02 (2006.01); C22B 3/00 (2006.01)
CPC C22B 3/02 (2013.01) [C22B 23/0407 (2013.01)] 10 Claims
OG exemplary drawing
 
1. A combined heat exchange system of flash tank and preheater for laterite nickel ore leaching: comprising:
a high-pressure reactor;
preheating towers, which are connected to a feed inlet of the high-pressure reactor;
flash tanks, which are connected to a discharge outlet of the high-pressure reactor, the flash tanks are also connected to the preheating towers through steam pipes; inside the flash tanks, there is a pressure relief chamber and a buffering mechanism, the buffering mechanism consists of a buffering component and a connecting structure, one side of the connecting structure is connected to the buffering component, while an other side is connected to a bottom of the pressure relief chamber; a side of the buffering component facing away from the connecting structure has a central bulge; around the central bulge, the buffering component has a buffering tank that is concave towards the connecting structure; a highest point of the central bulge is higher than the lowest point of the buffering tank, and a surface of the central bulge connects smoothly with the surface of the buffering tank; fluid falling in the pressure relief chamber passes over the surface of the central bulge and slide out from one end of the buffering tank to the other;
wherein the central bulge is conical, and the highest point of the central bulge is higher than any point in the buffering tank, the buffering tank is an arcuate groove, with one end of the buffering tank being tangent to the surface of the central bulge.