A feeding grid for laterite wet ore
By designing a detachable feeding grid structure, the problems of low strength and short service life of the feeding grid for wet laterite ore were solved, achieving efficient maintenance and production continuity, and improving production efficiency.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- JINCHUAN NICKEL COBALT RES & DESIGNING INST
- Filing Date
- 2025-07-08
- Publication Date
- 2026-06-12
AI Technical Summary
The existing wet ore feeding grids for laterite mines have low strength, short service life, and are inconvenient to maintain, which affects production efficiency and continuity.
A feeding grid structure including an outer frame beam, support beams and a detachable base was designed. The screening rails are made of I-beams, forming a structure that is larger at the top and smaller at the bottom. The screening rails can be fitted with the base gap for easy replacement and enhanced impact resistance.
It improves the strength and impact resistance of the feeding grating, extends its service life, simplifies the maintenance process, reduces production interruptions, and improves production efficiency.
Smart Images

Figure CN224346389U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the technical field of ore processing equipment, and in particular to a feeding grid for wet laterite ore. Background Technology
[0002] Laterite wet ore is an important mineral resource with wide applications in industries such as metallurgy. However, laterite wet ore has significant characteristics: its moisture content is approximately 35%-42%, and its particle size distribution is extremely uneven, ranging from 300mm to 10mm. According to the current mainstream RKEF / OESBF processing technology for laterite ore, and the requirements of vibrating screens and cone crushers, the particle size of laterite ore entering the system must be ≤150mm, while the proportion of particles larger than 150mm in the raw laterite ore exceeds 7%.
[0003] In practice, excavators are often needed to pound and compress the larger particles of laterite ore on the feeding grating to assist in feeding. This process places extremely high demands on the strength and impact resistance of the grating. Existing steel gratings, due to their low strength, cannot withstand prolonged, high-intensity impacts and have a short service life. For every 3000±500 tons of wet laterite ore processed, the steel grating needs to be repaired. The repair process is not only time-consuming, severely impacting the efficiency of the grating, but may even lead to a disruption in the entire production process to accommodate grating maintenance. Utility Model Content
[0004] To address the aforementioned technical problems, this utility model provides a feeding grid for wet laterite ore, which solves the problems of low strength, short service life, and inconvenient maintenance of existing wet laterite ore feeding grids.
[0005] To achieve the above objectives, the technical solution of this utility model is as follows:
[0006] A feeding grid for wet laterite ore includes an outer frame beam and screening rails. The outer frame beam has two beams, and the upper, middle and lower parts of the two outer frame beams are connected by support beams. Several bases are evenly spaced on the top surface of the support beams. The screening rails are I-beams and have several sections. The screening rails are slidably inserted between two adjacent bases.
[0007] Furthermore, the base is detachably mounted on the support beam.
[0008] Furthermore, the base is provided with protrusions on both sides that are adapted to the grooves on both sides of the screen rail.
[0009] Furthermore, the screening rail is installed upside down between two adjacent bases, forming a structure that is larger at the top and smaller at the bottom.
[0010] Furthermore, the protrusions of the base are fitted with the grooves on both sides of the screen rail with a clearance fit.
[0011] Compared with existing technologies, the beneficial effects of this invention are: With the auxiliary feeding mechanism of this invention, laterite ore with the required particle size can flow smoothly through the gaps between the screen rails. When the screen rails deform after long-term use, they can be directly pulled out from the base and replaced with new rails. This simple and convenient operation greatly shortens maintenance time, reduces production interruptions caused by screen maintenance, and improves production efficiency.
[0012] The screening rail inserted between two adjacent bases can swing freely within a certain range, which can eliminate the stress of excavator feeding during use. Compared with existing steel plate gratings, this utility model has higher strength and impact resistance, and extends the service life of the feeding grating.
[0013] The steel rails are designed with the bottom facing upwards, forming a structure that is wider at the top and narrower at the bottom. This prevents large pieces of material from getting stuck in the screen, avoiding production stoppages caused by material blockage and greatly improving production efficiency. At the same time, this structural design reduces production costs, demonstrating good practicality and economic benefits. Attached Figure Description
[0014] Figure 1 This is a top view of the present invention;
[0015] Figure 2 This is the front view of the present invention;
[0016] Figure 3 for Figure 2 A magnified view of the structure at point A in the middle.
[0017] In the picture:
[0018] 1. Outer frame beam; 2. Screening rail; 3. Support beam; 4. Base; 5. Groove; 6. Protrusion. Detailed Implementation
[0019] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to specific embodiments and accompanying drawings. It should be understood that these descriptions are merely exemplary and not intended to limit the scope of this utility model. Furthermore, descriptions of well-known structures and technologies are omitted in the following description to avoid unnecessarily obscuring the concept of this utility model.
[0020] A feeding grid for wet laterite ore includes an outer frame beam 1 and a screening rail 2. The outer frame beam 1 has two beams, and the upper, middle and lower parts of the two outer frame beams 1 are connected by a support beam 3. The top surface of the support beam 3 is provided with a number of bases 4 at equal intervals. The screening rail 2 is an I-beam and has a number of rails. The screening rails 2 are slidably inserted between two adjacent bases 4.
[0021] The base 4 is detachably mounted on the support beam 3.
[0022] The base 4 has protrusions 6 on both sides that are adapted to the grooves 5 on both sides of the screen rail 2.
[0023] The screening rail 2 is installed upside down between two adjacent bases 4, forming a structure that is larger at the top and smaller at the bottom.
[0024] The protrusion 6 of the base 4 is fitted with the grooves 5 on both sides of the screen rail 2 with a clearance.
[0025] When using:
[0026] First, the two outer frame beams 1 are installed and fixed according to the design requirements. Then, the upper, middle, and lower parts of the two outer frame beams 1 are connected by the support beams 3. Several bases 4 are installed equidistantly on the top surface of the support beams 3. The I-shaped screening rail 2 is installed upside down, with the grooves 5 on both sides engaging with the protrusions 6 on both sides of the base 4, allowing it to slide between adjacent bases 4. The clearance fit between the screening rail 2 and the base 4 allows the screening rail 2 to swing freely within a certain range.
[0027] When feeding wet laterite ore, the ore is placed on the feeding grid of this invention. An excavator is used to beat and compress the ore, and laterite ore meeting the particle size requirements flows out between the screening rails 2 and enters the subsequent processing system. During long-term use, if deformation or damage to the screening rails 2 is found, the damaged rails 2 can be directly pulled out of the base 4 and replaced with new ones. This eliminates the need for large-scale disassembly and repair of the entire grid, making the operation convenient and efficient, and effectively ensuring continuous production.
[0028] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.
Claims
1. A feeding grid for wet laterite ore, characterized in that: It includes an outer frame beam (1) and a screening rail (2). There are two outer frame beams (1). The upper, middle and lower parts of the two outer frame beams (1) are connected by a support beam (3). Several bases (4) are equidistantly arranged on the top surface of the support beam (3). The screening rail (2) is an I-beam and has several sections. Several screening rails (2) slide between two adjacent bases (4). The distance between two adjacent rails is 150mm.
2. The feeding grid for wet laterite ore according to claim 1, characterized in that: The base (4) is detachably mounted on the support beam (3).
3. A feeding grid for wet laterite ore according to claim 2, characterized in that: The base (4) has protrusions (6) on both sides that are adapted to the grooves (5) on both sides of the screen rail (2).
4. A feeding grid for wet laterite ore according to claim 3, characterized in that: The screening rail (2) is installed upside down between two adjacent bases (4), forming a structure that is larger at the top and smaller at the bottom.
5. A feeding grid for wet laterite ore according to claim 4, characterized in that: The protrusion (6) of the base (4) is fitted with the groove (5) on both sides of the screen rail (2) with a clearance.