CN-121976260-A - Automatic scraping device for nickel electrolysis anode mud

Abstract

The invention provides an automatic scraping system for nickel electrolysis anode slime, which belongs to the field of nonferrous metallurgical equipment, and comprises a frame, a scraper mechanism, an opening and closing mechanism, a lifting driving mechanism and a guiding mechanism, wherein the scraper mechanism comprises a plurality of fine-tuning scrapers which are arranged on a rotating shaft through torsion springs and angle limiters and can be self-adaptively and floatingly attached to the concave-convex surface of an anode plate, the opening and closing mechanism drives a gear rack through a hydraulic cylinder to control the opening and closing of the scraper mechanism, the lifting driving mechanism drives the anode frame to lift through a chain and a chain wheel frame, the guiding mechanism comprises a plurality of guiding shafts to ensure stable movement of the anode frame, the opening and closing mechanism is used for opening the scrapers, the lifting cylinder is used for lifting the anode plate to pass through the scraper mechanism, and the fine-tuning scrapes the anode slime in a self-adaptive manner. The automatic anode slime scraping device can realize automation of anode slime scraping, and solves the problems of high labor intensity, low efficiency, incomplete scraping by a rigid scraper and the like of manual scraping.

Inventors

• CHEN TAO
• ZHU LIANGQIN
• Hao songshan
• Cao fujian
• Shu Xiaoran
• QIN QIAN
• LI RUIJI
• WAN SHUNLEI
• ZHANG PENG
• LI JINLONG
• Yan Haohu
• Mu yawei
• ZHANG LILI
• ZHANG SIZENG

Assignees

• 金川集团镍钴股份有限公司

Dates

Publication Date

20260505

Application Date

20260210

Claims (6)

1. 1. An automatic scraping system for nickel electrolysis anode slime, comprising: The device comprises a rack (7), wherein a fixing frame (33) is arranged on the side part of the rack and is vertically connected with the rack, an anode frame (5) is arranged on the upper side of the rack, a discharging table (31) is arranged below the rack, a plurality of anode plates (11) are hung below the anode frame (5), and a chain wheel frame (29) is arranged on the side wall of the anode frame (5); The scraper mechanism (1) is arranged on the frame (7) and comprises a plurality of side plates (22), a plurality of rotating shafts (27) are arranged between the side plates (22), the rotating shafts (27) are provided with a plurality of fine-tuning scrapers (6) and are connected through torsion springs (24), and angle limiters (25) are arranged between the adjacent torsion springs (24), wherein the end parts of the fine-tuning scrapers (6) far away from the rotating shafts (27) are in barb shapes, and the end parts of the fine-tuning scrapers (6) on the adjacent rotating shafts (27) are symmetrically arranged; The opening and closing mechanism (2) is connected with the scraper mechanism (1) and is used for driving the scraper mechanism (1) to switch the opening and closing state; The lifting driving mechanism is arranged on the frame (7) and is used for driving the anode frame (5) to lift so that the anode plate (11) can move relative to the scraper mechanism (1) to scrape anode mud; the guide mechanism (4) comprises a plurality of guide shafts (21) which are vertically arranged, shaft sleeves (20) are sleeved on the outer sides of the guide shafts (21), and the tops of the guide shafts (21) are fixedly connected with the top corners of the anode frame (5).
2. 2. The system according to claim 1, characterized in that the number of rotational shafts (27) in the doctor mechanism (1) is arranged in parallel and the number of rotational shafts (27) is even; Both ends of the rotating shaft (27) are provided with transmission gears (16); The fine adjustment scrapers (6) on the adjacent rotating shafts (27) are oppositely arranged, and the end parts of the fine adjustment scrapers are just clamped, so that anode slime on the surface of the anode frame (5) is scraped.
3. 3. The system according to claim 2, wherein the shutter mechanism (2) comprises: The guide rail (17) is fixedly connected with the frame (7), and the top of the guide rail is provided with a rack meshed with the transmission gear (16); the sliding block (18) is clamped between the upper edge and the lower edge of the side plate (22), and the bottom of the sliding block is in sliding connection with the guide rail (17); The hydraulic cylinder (15) is connected with the sliding block (18) through a connecting rod (23); when the hydraulic oil cylinder (15) drives the scraper mechanism (1) to move along the guide rail (17), the transmission gear (16) rolls along the rack to drive the rotating shaft (27) to rotate, so that the adjacent fine-tuning scraper (6) is opened and closed.
4. 4. The system of claim 1, wherein the lift drive mechanism comprises: The lifting oil cylinders (3) are symmetrically arranged on two sides of the frame (7) and are parallel to the direction of the scraper mechanism (1), and piston rods (30) are arranged at the tops of the lifting oil cylinders (3); The balance shaft (12) is fixedly connected with the piston rod (30) and is vertically arranged; Balance wheels (14) which are arranged at both ends of the balance shaft (12); One end of the chain (8) is fixedly connected with the fixed seat (33), and the other end of the chain is fixedly connected with the chain wheel frame (29) after bypassing the balance wheel (14); when the piston rod (30) stretches, the balance shaft (12) drives the balance wheel (14) to move along the chain (8), so that the anode frame (5) is driven to lift.
5. 5. The system according to claim 1, characterized in that the guiding shaft (21) is of telescopic construction with a maximum extension height greater than the length of the anode plate (11).
6. 6. The system according to claim 5, characterized in that the guide shafts (21) are symmetrically arranged around the centre axis of the frame (7).

Description

Automatic scraping device for nickel electrolysis anode mud Technical Field The invention relates to the technical field of nonferrous metal hydrometallurgical equipment, in particular to an automatic anode slime scraping system and method for a nickel electrorefining process. Background In the wet electrolytic refining process of nickel, a soluble anode is generally adopted for electrolysis, in the electrolytic process, the anode plate is continuously dissolved, nickel enters electrolyte in an ionic form, certain impurities such as sulfide and the like are gradually separated out in an anode mud form and are attached to the surface of the anode plate, and the continuous accumulation of the anode mud can lead to the reduction of the effective conductive area of the anode plate, the increase of resistance, the increase of cell voltage and the increase of direct current power consumption, so that the electrolytic efficiency and the energy consumption index are seriously affected. At present, most nickel electrolysis enterprises in China still rely on manual operation to clean anode slime, namely operators need to use tools such as a scraping spade to manually scrape the anode slime below an anode plate lifted by a crane, the method has the obvious defects that ① is high in manual scraping labor intensity and low in operation efficiency, large-scale continuous production rhythm is difficult to match, ② is difficult to ensure in manual scraping cleanliness, if the scraping is incomplete, residual anode slime easily falls into a cathode diaphragm bag when the anode plate returns to an electrolysis tank to pollute electrolyte, the product quality of cathode nickel is affected, anode plates attached to the surface of ③ are uneven in anode slime, the voltage of the anode plates at the later stage of electrolysis is abnormally increased, the production process is stopped in advance, the anode residue rate is higher, material loss is increased, ④ mud scraping operation is usually performed on an operation platform with a narrow space, the environment is bad, and potential safety hazards exist. In order to solve the technical problems, some enterprises have tried some mechanical or hydraulic cleaning methods, but the effects are not ideal, for example, a rigid integrated scraper is adopted, so that the scraper cannot adapt to bending, deformation or surface roughness generated in the use process of the anode plate, a dead zone exists in the scraping process, the scraping rate is low, if high-pressure hydraulic spraying is adopted, part of anode mud can be removed, but the water consumption is huge, a large amount of sewage containing heavy metals can be generated, the subsequent wastewater treatment cost and environmental protection pressure are increased, and the wet anode plate returns to an electrolytic tank to possibly have adverse effects on the electrolytic process. Therefore, developing an automatic anode mud scraping technology and equipment which can adapt to the surface condition of the anode plate, thoroughly scrape, efficiently save energy and improve the working environment has become a technical problem to be solved in the nickel electrolysis industry. Disclosure of Invention Aiming at the problems of the prior art, the invention provides an automatic scraping system for nickel electrolysis anode slime, which solves the problems of high labor intensity, low efficiency, unstable quality, poor working environment, poor adaptability, incomplete scraping or high energy consumption, large pollution and the like of the existing rigid scraper or hydraulic cleaning mode in the prior art depending on manual scraping of the anode slime. Therefore, the invention adopts the following technical scheme: An automatic scraping system for nickel electrolysis anode mud, comprising: The rack is used as a supporting structure, a fixing frame is arranged on the side part of the rack and is vertically connected with the rack, an anode frame is arranged above the rack, a discharging table is arranged below the rack, a plurality of anode plates are hung below the anode frame, and a chain wheel frame is arranged on the side wall of the anode frame; The scraper mechanism is arranged on the frame and comprises at least 2 rotating shafts which are arranged in parallel and a plurality of fine-tuning scrapers arranged on each rotating shaft, the fine-tuning scrapers are connected with the rotating shafts through torsion springs and angle limiters, the fine-tuning scrapers can elastically rotate around the rotating shafts within a set swinging angle range, the working ends of the fine-tuning scrapers are barb-shaped, the fine-tuning scrapers opposite to each other on adjacent rotating shafts are symmetrically arranged and are clamped, and the number of the fine-tuning scrapers is matched with the width of a common anode plate so as to ensure that the full coverage of scraping. The opening and closing mechanism is connected with the sc