CN-122013146-A - Fluidized bed carbonyl method powder surface modification production device and use method thereof

Abstract

The invention provides a fluidized bed carbonyl powder surface modification production device and a use method thereof, belongs to the technical field of powder metallurgy and atomic vapor deposition, solves the problem that the existing fluidized bed carbonyl powder surface modification production device with stable and high efficiency is lacked, is provided with a fluidized bed reactor, an electromagnetic heater is arranged on the fluidized bed reactor, a fluidized bed blast cap is arranged at the bottom of the fluidized bed reactor, the fluidized bed reactor is sequentially connected with a cyclone separator and a dust collector, the dust collector is connected with the fluidized bed reactor in a return way, the cyclone separator and the dust collector are respectively connected with a passivation bin, and the passivation bin is connected with a multistage linear screening device. The invention combines the chemical fluidized bed technology and the material chemical vapor deposition preparation technology, and utilizes the characteristics of high purity, low thermal dissociation temperature, and the like of a carbonyl metal intermediate compound to carry out atomic vapor deposition coating of high-purity nickel metal atoms by taking nickel carbonyl liquid as a raw material.

Inventors

• JIANG LIN
• LI HUBING
• LUO SHIMING
• WANG LIANG
• SUN ZHEN
• GUO BIAO
• Xu Haoshan
• XU JUNCHENG
• LIU YU

Assignees

• 金川集团镍钴股份有限公司

Dates

Publication Date

20260512

Application Date

20260213

Claims (5)

1. 1. The device is characterized by comprising a feeding bin (1), wherein the feeding bin (1) is connected with a fluidized bed reactor (2), an electromagnetic heater (11) is arranged on the fluidized bed reactor (2), a fluidized bed hood (9) is arranged at the bottom of the fluidized bed reactor (2), a cyclone separator (4) and a dust collector (5) are sequentially connected with the fluidized bed reactor (2), the dust collector (5) is connected with the fluidized bed reactor (2) in a returning way, a passivation bin (6) is respectively connected with the cyclone separator (4) and the dust collector (5), and a multi-stage linear screening device (7) is connected with the passivation bin (6).
2. 2. The fluidized bed carbonyl process powder surface modification production device according to claim 1, wherein the fluidized bed reactor (2) is connected with a heater (3), and the heater (3) is connected with a flowmeter (10).
3. 3. The fluidized bed carbonyl process powder surface modification production device according to claim 2, wherein an observation port (8) is arranged at the top of the fluidized bed reactor (2).
4. 4. A fluidized bed carbonyl process powder surface modification production device according to claim 3, wherein a differential pressure gauge (12) is arranged on the fluidized bed reactor (2).
5. 5. The method for using the fluidized bed carbonyl process powder surface modification production device according to claim 4, which is characterized by comprising the following steps: The method comprises the steps that firstly, materials coated in a feeding bin (1) enter a fluidized bed reactor (2) from the bottom and the middle through the dead weight of the materials, and the fluidized bed reactor (2) is respectively filled with nitrogen and gaseous nickel carbonyl; After the atomic vapor deposition chemical reaction in the fluidized bed reactor (2) is finished, blowing the coated material to a cyclone separator (4) and a dust collector (5) for collection by utilizing nitrogen, conveying the material to a passivation bin (6), and carrying out replacement detoxification and cooling on the product by utilizing nitrogen; Thirdly, the product discharged from the passivation bin (6) contains partial unqualified products, the powder which is not fully coated and the powder with overlarge coating degree are subjected to multistage screening separation through multistage linear screening equipment (7), and finally the qualified products are collected.

Description

Fluidized bed carbonyl method powder surface modification production device and use method thereof Technical Field The invention belongs to the technical field of powder metallurgy and atomic vapor deposition, and particularly relates to a fluidized bed carbonyl method powder surface modification production device and a use method thereof. Background The metal coated composite material is one kind of composite functional material with core-shell structure, and has the main features of metal coating and coated particle, excellent comprehensive performance produced through the interaction of the components, capacity of altering the light, magnetism, electricity, catalysis, hydrophilicity, hydrophobicity and sintering characteristic, raised corrosion resistance, durability, long service life, heat, mechanical and chemical stability, and other application in metallurgical, mechanical, aviation and other fields. The fluidized bed-chemical vapor deposition technology is the cross coupling of the chemical fluidized bed technology and the material chemical vapor deposition preparation technology, has the advantages of large fluidized bed treatment capacity, fast heat transfer, uniform temperature, wide chemical vapor deposition temperature regulation range, rich products and the like, and has important application in the fields of nuclear fuel preparation, powder surface modification and the like. The method for carrying out the thermal decomposition metal atomic deposition by taking nickel carbonyl as a raw material has the advantages of short flow, high purity, no generation of harmful tail gas and the like, and utilizes the characteristics of high purity, low thermal dissociation temperature, diversity of dissociation products and the like of a metal carbonyl intermediate compound, so that the research on novel carbonyl composite materials is one of hot spots in the current material research, and has wide application prospects in the fields of aerospace, electronics, energy, chemical industry and the like. The carbonyl composite materials which are researched at present mainly comprise carbonyl metal (or metal compound) composite powder, carbonyl metal coating materials, carbonyl metal film materials, carbonyl metal functional gradient materials and the like, but a fluidized bed carbonyl method powder surface modification production device with stable and efficient effect is lacked. Disclosure of Invention The invention aims to provide a fluidized bed carbonyl powder surface modification production device and a using method thereof based on taking nickel carbonyl liquid as a raw material and taking a fluidized bed reactor as main reaction equipment, so as to solve the problem that the existing fluidized bed carbonyl powder surface modification production device with stable and efficient effect is lacking. The invention has the technical scheme that the fluidized bed carbonyl powder surface modification production device comprises a feeding bin, wherein the feeding bin is connected with a fluidized bed reactor, an electromagnetic heater is arranged on the fluidized bed reactor, a fluidized bed hood is arranged at the bottom of the fluidized bed reactor, the fluidized bed reactor is sequentially connected with a cyclone separator and a dust collector, the dust collector is connected with the fluidized bed reactor in a return way, the cyclone separator and the dust collector are respectively connected with a passivation bin, and the passivation bin is connected with multi-stage linear screening equipment. As a further improvement of the invention, the fluidized bed reactor is connected with a heater, and the heater is connected with a flowmeter. As a further improvement of the invention, the top of the fluidized bed reactor is provided with a viewing port. As a further improvement of the invention, a differential pressure gauge is arranged on the fluidized bed reactor. The application method of the fluidized bed carbonyl method powder surface modification production device comprises the following steps: The method comprises the steps that firstly, materials coated in a feeding bin enter a fluidized bed reactor from the bottom and the middle through the dead weight of the materials, and nitrogen and gaseous nickel carbonyl are respectively introduced into the fluidized bed reactor; after the atomic vapor deposition chemical reaction in the fluidized bed reactor is finished, blowing the coated material to a cyclone separator and a pulse dust collector by utilizing nitrogen to collect the material, conveying the material to a passivation bin, and using the nitrogen to replace and detoxify the product and cool the product; and thirdly, carrying out multistage screening separation on the powder which is not completely coated and the powder with overlarge coating degree by a multistage linear screening device, and finally collecting the qualified product. The beneficial effects of the invention are as follows: According