Production apparatus for hydrothermal synthesis of lithium iron phosphate

A production apparatus for hydrothermal synthesis of lithium iron phosphate, comprising first stirring devices (1), a preheating device (2), a second stirring device (3), and a drying device (4), wherein there are two first stirring devices (1), and the preheating device (2) comprises a housing (2a), a heating box (2b), two feeding pumps (2c), two first transfer assemblies (2d), and several first heating tubes (2b1), wherein the housing (2a) is positioned between the two first stirring devices (1) and the second stirring device (3);

• the heating box (2b) is fixedly connected to the interior of the housing (2a) and is made of a metal material with good thermal conductivity;
• the two first transfer assemblies (2d) each comprise an inlet pipe (2d1), an outlet pipe (2d2), and several transfer branch tubes (2d3), wherein the inlet pipe (2d1) and the outlet pipe (2d2) are both in a horizontal state and positioned at top and bottom of the heating box (2b), respectively;
• the several transfer branch tubes (2d3) are provided in a vertical state at equal distances and in parallel between the inlet pipe (2d1) and the outlet pipe (2d2), and all the transfer branch tubes (2d3) pass through the interior of the heating box (2b);
• the inlet pipes (2d1) of the two first transfer assemblies (2d) are communicated with the two first stirring devices (1), respectively;
• the two feeding pumps (2c) are positioned between the two first stirring devices (1) and the inlet pipes (2d1) of the two first transfer assemblies (2d), respectively;
• the two outlet pipes (2d2) are both communicated with the second stirring device (3);
• the several first heating tubes (2b1) are all in a horizontal state and pass through the interior of the heating box (2b);
• second transfer assemblies (2e) are provided next to the two first transfer assemblies (2d), a flow meter (2d4) is provided on each inlet pipe (2d1) of the two first transfer assemblies (2d) and the two second transfer assemblies (2e), at an end near the first stirring device (1);
• support frames (2a1) are provided at both top and bottom of the housing (2a), the heating box (2b) is fixedly connected to the support frames (2a1), and the housing (2a) is made of a thermal insulating material.