Specification

316 Stainless Wear-Resistant Zero-Leakage High-Pressure Knife Slurry Valve for Mining Operations

I. Product Overview

NEWWAY Wear-Resistant Zero-Leakage High-Pressure Knife Slurry Valve is a specialized industrial valve meticulously engineered to address the challenges of handling abrasive and high-pressure slurries, particularly in mining operations. Leveraging advanced materials and innovative design concepts, this valve offers reliable flow control, exceptional wear resistance, and zero – leakage performance, ensuring stable and efficient operation in harsh industrial environments.

II. Key Attribute Specifications

1. Dimensions and Pressure-Related Parameters

Nominal Diameter (DN): Available in a range of sizes to accommodate different pipeline requirements in mining and related industries. Sizes typically span from small-diameter pipelines for precise slurry transfer in laboratory-scale mining operations to large-diameter ones for major slurry transport lines in large-scale mines. For example, common sizes include DN50 for small-scale slurry sampling lines and DN300 for main slurry discharge pipelines from concentrators.

Pressure Rating: High-pressure rated, capable of withstanding significant internal pressures. It can handle pressures up to [X] MPa, making it suitable for high- pressure slurry transport scenarios such as those found in deep-well mining operations where high-pressure pumps are used to move slurries over long distances.

2. Material Composition

Valve Body: Constructed from high-strength materials, such as high – grade cast steel (e.g., WCB) or stainless steel (e.g., 316L for corrosive slurry applications). Cast steel provides excellent structural integrity, withstanding the mechanical stress associated with high-pressure slurry flow and potential impacts from solid particles in the slurry. Stainless steel variants are chosen when the slurry contains corrosive substances, like acidic or alkaline mine wastewater mixed with the slurry.

Gate: The gate is made of a wear-resistant alloy, often a hardened stainless steel or a special alloy designed specifically for high-abrasion environments. For instance, materials with high chromium content are used to enhance hardness and wear resistance. In some cases, the gate may be coated with a hard-facing material, such as tungsten carbide, to further increase its resistance to the abrasive action of the slurry particles.

Sealing Components: Utilizes high-performance elastomeric materials for sealing. These materials, such as polyurethane or specialized rubber compounds, are selected for their ability to provide a tight seal even under high-pressure conditions and in the presence of abrasive particles. They are also resistant to chemical attack from the slurry components, ensuring long-term sealing effectiveness.

3. Actuation Options

Manual Actuation: A manual handwheel or lever is provided for basic operation. This option is suitable for applications where the valve is infrequently adjusted or in areas where power sources may not be readily available. Manual actuation allows for precise control of the valve’s opening and closing, making it useful for small -scale mining operations or for emergency shutdowns when other actuation methods fail.

Pneumatic Actuation: Pneumatic cylinders can be attached to the valve for remote or automated operation. Compressed air is used to drive the movement of the gate, enabling quick opening and closing of the valve. This is ideal for applications where rapid response times are required, such as in automated slurry transfer systems where valves need to be opened or closed in sync with other equipment.

Electric Actuation: Electric motors can also be used to actuate the valve. Electric actuation offers the advantage of precise control and can be integrated into complex automation systems. It is suitable for large – scale mining operations where centralized control of multiple valves is necessary, and where the ability to accurately position the valve is crucial for efficient slurry flow management.

4. Temperature and Media Compatibility

Temperature Range: Designed to operate within a wide temperature range. It can withstand both high-temperature slurries, such as those generated in some mineral processing operations where heat is used in the extraction process, and low-temperature slurries, like those in cold-climate mining regions. The temperature range typically extends from [minimum temperature] to [maximum temperature], ensuring adaptability to various mining-related scenarios.

Media Compatibility: Specifically engineered to handle a variety of slurries encountered in mining operations. This includes slurries containing a high concentration of abrasive minerals (such as quartz, feldspar), as well as slurries with corrosive components (such as those containing sulfuric acid in sulfide ore mining). The valve’s material selection and design enable it to resist the wear and corrosion effects of these complex media, maintaining its performance over an extended service life.