ABOUT US
Your Expert Manufacturer of Wedge Wire Screens;
Your Reliable Partner and Source of Innovation
GET A FREE QUOTE
-
Home
-
Products
-
Wedge Wire Screen
-
Wedge Wire Screen Cylinder
- Interstage Screen
Interstage Screen
The stainless steel wedge wire interstage screen, commonly known as a "Carbon Transfer Screen" or CIL/CIP Cylinder Screen in the gold extraction industry, is a core interstage separation device in carbon-in-pulp (CIP) and carbon-in-leach (CIL) gold extraction processes. It is a large horizontal cylindrical screen with a surface made of high-precision stainless steel wedge wire, installed between leaching tanks. Its primary function is to efficiently and non-destructively separate loaded carbon from slurry during the countercurrent adsorption of gold by activated carbon. It ensures carbon particles smoothly advance to the next adsorption tank while effectively retaining the slurry (containing fine tailings) and returning it to the previous leaching tank, enabling continuous and efficient gold adsorption and concentration.
-
Welding
-
MPS Interstage Screen Application
Product Features and Advantages
Exceptional Separation Efficiency and Reliability
Precision wedge wire slots (typically 0.6–1.2 mm) are designed to match activated carbon particle sizes, achieving nearly 100% carbon-slurry separation, effectively preventing cross-contamination of fine carbon and slurry, and ensuring stable adsorption performance.
Minimal Carbon Wear and Gold Loss
The smooth V-shaped wire surface and precise slots prevent cutting or excessive abrasion of carbon particles during separation, maximizing the integrity of loaded carbon and reducing gold loss due to carbon fines.
The fully welded, dead-zone-free structure prevents carbon particle clogging, ensuring smooth carbon flow.
High Throughput and Anti-Clogging Design
High open area (typically 25%–35%) provides a large effective filtration area, enabling high processing capacity with low pressure drop.
The “inside-out” flow design (slurry inside the cylinder, carbon discharged from one end) combined with the self-cleaning特性 of wedge wire effectively prevents clogging from impurities like wood chips and fibers in the slurry.
Superior Mechanical Strength and Wear Resistance
Constructed from high-grade 304/316L stainless steel or wear-resistant steel, offering high overall strength. The welded structure of the wedge wire and reinforcing ribs withstands continuous scouring from multi-ton carbon-slurry mixtures and mechanical actions from internal rotors, far outperforming traditional screen plates in service life.
Easy Maintenance and Low Operating Costs
The durable metal screen requires minimal maintenance and eliminates the frequent replacements needed for traditional screens, significantly reducing downtime and spare parts costs.
Product Parameters
| Parameter Category | Typical Specifications & Descriptions |
| Core Screen | Stainless steel wedge wire, fully welded cylindrical structure. |
| Separation Accuracy (Slot Size) | Standard range: 0.6–1.2 mm (most commonly 0.8 mm or 0.9 mm), selected based on the particle size of the activated carbon used (typically 1.0–3.35 mm). |
| Cylinder Diameter | φ800 mm – φ2000 mm or larger, matched to processing capacity and carbon flow rate. |
| Cylinder Length | Typically 1.5–2.5 times the diameter, affecting carbon retention time and processing capacity. |
| Material | 304/316L Stainless Steel. |
| Connection Method | Large flanges for connection to adjacent tanks, facilitating installation and maintenance. |
Application Areas/Scenarios
Gold Extraction Industry (Core and Exclusive Application)
- Carbon-in-Leach (CIL) Plants: Installed between leaching-adsorption tanks to enable countercurrent separation of slurry and loaded carbon.
- Carbon-in-Pulp (CIP) Plants: Used to extract and transfer loaded carbon from post-leaching slurry to the elution and electrowinning section.
Other Similar Adsorption Processes
Hydrometallurgical processes using granular adsorbents (e.g., activated carbon, resin) to recover other valuable metals (e.g., silver, palladium, uranium) from slurries.
Summary
The stainless steel wedge wire interstage screen (carbon transfer screen) is the “critical juncture” equipment in modern carbon-in-pulp gold processing plants. Its performance directly impacts gold recovery rates, activated carbon consumption, and production continuity. Compared to earlier screens prone to clogging, rapid wear, and poor separation, the Johnson wedge wire carbon transfer screen—with its precise separation, exceptional wear resistance, and extended service life—has become the standard configuration for high-standard, high-efficiency CIL/CIP process lines in large-scale gold mines worldwide. It is a key technological guarantee for achieving efficient and economical gold recovery.
OUR PRODUCTS
Best-selling Products
Starch Screen
The Wedge Wire Starch Curved Screen is a curved screening device specifically designed for the starch industry. It features an arc-shaped screen surface made of precisely welded V-profile stainless steel wires, utilizing centrifugal force or gravity to achieve rapid dewatering and classification of starch slurry. Its curved structure prolongs slurry retention time, improving solid-liquid separation efficiency. It is suitable for starch extraction, refining, and byproduct recovery processes for starches such as potato, corn, and cassava. Characterized by efficient screening, wear and clogging resistance, and easy maintenance, this equipment is a key solid-liquid separation device in modern starch processing.
Rotary Drum
The Stainless Steel Wedge Wire Rotary Drum Screen (also known as a Rotary Drum Strainer or Micro-Screen) is a continuously and automatically operating front-end solid-liquid separation device. Its core component is a large cylindrical drum installed horizontally or at a slight incline. The entire circumferential surface of the drum is covered with a stainless steel wedge wire screen (Johnson screen). The wastewater to be treated flows into one end of the drum. Under gravity, the filtrate passes through the wedge wire slots, while solid suspended matter (such as fibers, hair, plastic pieces, and fine particles) is retained on the inner surface of the drum. As the drum rotates slowly, the retained debris is lifted to the top, where it is flushed by spray water into a collection trough, achieving a continuous process of automatic screening, filtration, and residue removal
Screen Basket for Screw Press Separator
The stainless steel wedge wire screen basket, commonly known as the "V-wire screen," "press screen basket," or "screen cylinder," is a core component of screw press solid-liquid separators. It is installed inside the spiral press, enclosing the rotating screw shaft. The working principle is as follows: raw slurry with high moisture content is pushed into the screen basket by the screw shaft. Under the squeezing and conveying action of the spiral flights, the liquid (filtrate) is forced out through the precise, continuous slots of the screen basket, while the solid material (manure cake) is retained inside and continues to be compressed and dewatered as it moves forward. Finally, the dewatered solids are discharged from the outlet, achieving solid-liquid separation.
Wedge Wire Vibrating Screen
A stainless steel wedge wire vibrating screen is a solid-liquid separation device featuring a screen surface made by precisely welding V-shaped stainless steel wires, integrated with a high-frequency vibration system. With uniform slots, wear resistance, and corrosion resistance, it is suitable for wet screening and dewatering operations. The vibration mechanism enables rapid material dispersion and efficient sieving while effectively preventing screen clogging. Widely used in industries such as mining, metallurgy, food processing, and environmental protection, it is particularly suitable for handling fine particles, high-viscosity, or easily agglomerated materials, offering advantages such as high screening accuracy, large processing capacity, and long service life.
Wedge Wire Water Well Screen
Johnson Deep Water Well Screens, also referred to as continuous slot screens or wire wrap screens, were originally developed to solve sand control challenges in fine-grained and uniform sand formations. These geological conditions are commonly encountered in deep groundwater aquifers, where conventional perforated pipes often suffer from clogging, excessive sand production, and reduced well efficiency.
Sintered Mesh Plate and Disc
Sintered Mesh Plates and Discs are high-precision filtration components fabricated by bonding multiple layers of stainless steel wire mesh through a specialized vacuum sintering process. Unlike traditional mesh that relies on mechanical weaving alone, these plates are fused at every contact point, transforming individual wires into a rigid, integrated porous metal sheet.
These plates can be customized into various shapes, most commonly circular discs, to fit specific industrial equipment. They offer an ideal balance of high permeability, extreme structural integrity, and precise filtration ratings. Because they are made entirely of metal (typically 304 or 316L), they provide a "permanent" filtration solution that can withstand high temperatures and corrosive chemicals while remaining fully cleanable and reusable.
OUR LATEST
Our Latest Blog & News
How Centrifuge Screen Baskets Dewater High-Solids Mineral Slurry
Learn how centrifuge screen baskets dewater high-solids mineral slurry through centrifugal drainage, wedge wire slots, cone geometry, and wear-aware design.
Why Use Sieve Bend Screens for Mineral Slurry Pre-Dewatering?
See why static sieve bend screens remove free water before downstream mineral slurry dewatering equipment and what process conditions determine their value.
Wedge Wire Vibrating Screen Application in Slurry
How wedge wire vibrating screens stabilize mineral slurry dewatering and wet classification through V-shaped slots, vibration, open area and material selection.
What Defines a Reliable 5 MPa Wedge Wire Screen?
Explore our high-performance 5 MPa wedge wire screen designed for advanced filtration efficiency, precise slot openings, and exceptional durability in demanding industrial oil extraction applications.
How Johnson Screen Filter Element Improves Slurry Classification
Explore johnson screen filter element mining slurry classification solutions with V-wire technology, precise filtration control, and durable performance for demanding mineral processing applications.
How to Specify a Johnson Screen for Chemical Cleaning
Specify a Johnson screen for chemical cleaning by matching alloy, slot geometry, construction, cleaning limits, and supplier evidence to the duty.
