1. Industry Background and Challenges‌

In mining and metallurgical production processes, large volumes of corrosive media—such as acidic solutions, alkaline liquids, and organic solvents—must be handled. These substances are not only highly corrosive but may also contain solid particles or other impurities, imposing stringent demands on pump materials, sealing performance, and operational stability. Selecting the appropriate pump solutions is critical to ensuring continuous and safe production.

2. Overview of Anhui Changyu Pump & Valve Solutions‌

Anhui Changyu Pump & Valve Manufacturing Co., Ltd. has developed a range of specialized pump products tailored to the unique demands of the mining and metallurgical industries. Below are the key pump solutions offered:

‌2.1. Corrosion-Resistant Magnetic Drive Pumps‌

• ‌Working Principle‌: Utilizes magnetic coupling technology to eliminate mechanical seals, ensuring leak-free operation.
• ‌Materials & Applicable Media‌: Constructed with high-performance corrosion-resistant alloys (e.g., 304, 316, 316L stainless steel, Hastelloy), ideal for handling highly corrosive fluids.
• ‌Advantages‌: Compact design, smooth operation, and suitability for diverse corrosive media in mining and metallurgical processes.

‌2.2 Plastic-Lined Slurry Pumps‌

• ‌Applications‌: Designed for corrosive slurries such as phosphoric acid slurry and fluorosilicic acid slurry.
• ‌Features‌: Plastic-lined interior for enhanced corrosion resistance, combined with superior abrasion resistance for particle-laden media.
• ‌Advantages‌: Easy maintenance and reliable performance, making them ideal for slurry transportation in mining and metallurgy.

‌2.3 Stainless Steel Centrifugal Pumps‌

• ‌Materials‌: Premium stainless steel construction for excellent corrosion and high-temperature resistance.
• ‌Applications‌: Suitable for seawater, brine, organic solvents, and other corrosive media at varying concentrations.
• ‌Advantages‌: Compact structure, high efficiency, and versatility for diverse corrosive fluid handling needs in the industry.

3. Detailed Application Scenario Analysis‌

‌3.1. Ore Processing‌

• ‌Process Description‌: Involves crushing, grinding, and leaching of ores, requiring handling of large volumes of corrosive media.
• ‌Pump Selection‌: Corrosion-resistant magnetic drive pumps and stainless steel centrifugal pumps are ideal for ore processing, ensuring stable transportation and leak prevention.

‌3.2 Flotation Separation‌

• ‌Process Description‌: Separates valuable minerals from waste rock via flotation technology, involving corrosive reagents.
• ‌Pump Selection‌: Plastic-lined slurry pumps excel in flotation due to their corrosion and abrasion resistance.

‌3.3 Smelting & Extraction‌

• ‌Process Description‌: Operates in high-temperature, high-pressure environments with corrosive media.
• ‌Pump Requirements‌: Pumps must resist corrosion, high temperatures, and pressure. Magnetic drive pumps and stainless steel centrifugal pumps are preferred for their superior performance.

‌3.4 Tailings Treatment‌

• ‌Process Description‌: Handles slag and tailings containing solid particles and acidic waste liquids.
• ‌Pump Selection‌: Plastic-lined slurry pumps, balancing corrosion and abrasion resistance, are optimal for tailings processing.

3.5 Cooling Circulation‌

• ‌Process Description‌: Requires corrosion-resistant cooling media circulation in smelting.
• ‌Pump Requirements‌: Pumps must resist corrosion and ensure long-term stability. Stainless steel centrifugal pumps are well-suited for this application.

4. Conclusion‌

Leveraging extensive expertise and cutting-edge technology in pump and valve manufacturing, Anhui Changyu Pump & Valve Manufacturing Co., Ltd. delivers a comprehensive range of high-efficiency, reliable pumping solutions tailored for the mining and metallurgical industries. These solutions not only address the industry's specialized requirements for handling corrosive media but also enhance operational stability and safety in production processes.

Moving forward, as technology evolves and industry demands continue to shift, Anhui Changyu Pump & Valve remains committed to innovation and R&D, striving to provide the mining and metallurgical sectors with superior pump products and technical services.

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Overview

ICI pilling tester is a professional test equipment specially used to evaluate the anti-pilling performance of textile surface. The instrument provides objective data for textile quality control by simulating the friction effect of fabrics in daily use.

Main uses

1. Textile quality evaluation

(1) Used to determine the ability of various woven fabrics, knitted fabrics and non-woven fabrics to resist surface pilling during wearing and washing.

(2) Evaluate the anti-pilling performance of different fabrics (such as wool, cotton, chemical fiber and their blended fabrics).

(3) Provide objective basis for product quality control for textile manufacturers.

2. Product R&D support

(1) Help R&D personnel compare the anti-pilling properties of different fiber materials, yarn structures and fabric structures.

(2) Evaluate the effects of new textile materials or special finishing processes (such as anti-pilling treatment).

(3) Provide data support for product improvement and optimize production process parameters.

3. Standard compliance testing

(1) Implement pilling tests of international standards (such as ISO 12945), national standards (such as GB/T 4802.1) and industry standards.

(2) Provide compliance test reports for product certification.

(3) Ensure that exported textiles meet the quality requirements of the target market.

4. Consumer experience prediction

(1) Simulate the surface changes of fabrics under normal use conditions.

(2) Predict the appearance retention of products after actual wearing and washing.

(3) Provide consumers with product quality reference.

Application industries

(1) Garment manufacturing industry (especially high-end suits, sweaters and other products prone to pilling).

(2) Home textile industry (sheets, sofa fabrics, etc.).

(3) Industrial textiles.

(4) Quality inspection agencies and third-party testing laboratories.

(5) Textile colleges and research institutions.

ICI pilling tester provides the textile industry with an important tool for evaluating product durability and appearance retention through standardized testing methods, which plays an important role in improving product quality and consumer satisfaction.

Email: hello@utstesters.com

Direct: + 86 152 6060 5085

Tel: +86-596-7686689

Web: www.utstesters.com

This article analyzes the available pump types for specific media to help you make a faster and more effective selection, and also provides some data for your reference.

 

1.Working condition characteristics analysis

 

Medium characteristics

Strong acidity: pH=2 is a strong acid environment, and the acid corrosion resistance of the material needs to be considered

 

Oxidation: The medium has oxidizing properties, and the material's antioxidant capacity needs to be evaluated

 

Containing solid particles: The presence of small sand particles will cause wear problems (it is recommended to confirm the particle size distribution and concentration)

 

2.Material selection

 

2.1 It is recommended to use PTFE (polytetrafluoroethylene) or F46 lined pump body, which has the following features:

 

✓ Strong acid resistance (applicable to the full range of pH 0-14)

✓ Excellent oxidation resistance

✓ Smooth surface and not easy to scale

2.2 Mechanical seals are recommended to use SiC/SiC pairing, which is more resistant to particle wear than graphite

 

2.3 Key selection parameters

 

Required notes Speed ≤ 2900rpm: reduce particle erosion and wear

Impeller type semi-open/open impeller: avoid blockage of closed impeller flow channel

Gap design is 0.3-0.5mm larger than standard pump to accommodate particle passage

Shaft seal type: double-end mechanical seal + flushing water (Plan53B external flushing solution is recommended)

 

 

3. Special design points

 

Wear-resistant structure

The impeller front cover is thickened by 2-3mm

A replaceable wear-resistant plate is set at the volute of the pump body

The surface of the flow-through parts can be hardened

 

4. Operation suggestions

 

It is recommended to install a Y-type filter at the inlet (the mesh size is determined by the particle size)

The minimum flow rate should be >30% Qn to prevent solid deposition

The flow channel should be flushed in time when the machine is shut down

 

5. Recommended typical models

 

Domestic: IHF80-65-160 fluoroplastic centrifugal pump (with wear-resistant modification kit)

Imported: CPK80-200F (with impeller for granular media)

If the budget is li mited, you can consider: FSB80-50-200 (need to confirm the actual particle parameters)

 

If you have better ideas, please leave a message. We are happy to learn new knowledge and provide better service.

Attached is the performance curve of our IHF chemical pump：

I. Instrument Introduction

ICI Mace Snag Tester is a test device used to evaluate the snagging tendency of fabrics when subjected to sharp objects. The instrument is widely used in the anti-snagging performance test of textiles, knitwear, woven fabrics and other materials, and is suitable for quality control, product development and standard testing.

II. Test Standards

ICI Mace Snag Tester is usually tested according to the following standards:

(1)ASTM D3939 (Standard Test Method for Snagging Resistance of Fabrics (Mace Test Method))

(2)ISO 16547 (Textiles — Determination of fabric propensity to snagging — Mace test)

(3)BS 5811 (British Standard)

III. Preparation before testing

1. Instrument inspection

(1) Make sure the instrument is placed horizontally to avoid vibration interference.

(2) Check whether the rotating arm and test pin (mace) are intact and free of wear or deformation.

(3) Ensure that the inside of the test box is clean and free of residual fibers or impurities.

2. Sample preparation

(1) Sample size: at least 200mm × 200mm (it is recommended to cut into a circle to fit the test box).

(2) Number of samples: usually 3-5 samples are tested to improve data accuracy.

(3) Sample status: should be humidified for at least 24 hours under standard atmospheric conditions (20±2℃, 65±4% RH).

3. Calibration (if necessary)

Use standard calibration fabric to calibrate the instrument to ensure consistency of test results.

Check whether the rotation speed meets the standard (usually 60±2 rpm).

IV. Test steps

1. Install the sample

(1) Fix the sample flatly on the sample clamp in the test box to ensure that there are no wrinkles.

(2) Adjust the sample tension so that it is close to the inner wall of the test box but not overstretched.

2. Set test parameters

(1) Test time: usually 600 revolutions (about 10 minutes), or adjust according to standard requirements.

(2) Rotation speed: 60 rpm (default value).

3. Start the test

(1) Close the test box door and ensure that it is securely locked.

(2) Press the start button and the instrument starts running.

(3) Avoid opening the door or interfering with the instrument operation during the test.

4. End of the test

(1) After the instrument stops automatically, remove the sample.

Inspect the surface of the sample for any snagging and record the number, length and severity of snagging.

V. Result Evaluation

1. Rating Method

Usually, visual rating method is used to judge by comparing with standard sample photos or rating cards:

Grade 1: Severe snagging (many long snagging)

Grade 2: Moderate snagging (obvious snagging)

Grade 3: Slight snagging (a few short snagging)

Grade 4: Almost no snagging (very slight)

Grade 5: No snagging (perfect)

2. Data Recording

(1) Record the snagging level of each sample.

Calculate the average value as the final test result.

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4-layer Stainless Steel Shelf

1. Durability: Stainless steel is known for its durability. It is resistant to rust, corrosion, and staining. This makes it suitable for use in environments where moisture or exposure to various elements might be a concern.
2. Hygiene:Stainless steel is easy to clean and maintain, which is particularly important in environments where cleanliness is crucial, such as kitchens, hospitals, or laboratories.
3. Strength:Stainless steel has high tensile strength, which means it can withstand heavy loads without bending or warping. This makes it suitable for storing heavy items or equipment.
4. Aesthetic Appeal:Stainless steel has a sleek and modern appearance that can enhance the overall aesthetic of a space. It is often used in contemporary designs and is versatile enough to complement various styles.
5. Versatility: Stainless steel shelves can be used in a variety of settings, including kitchens, industrial spaces, laboratories, and more. They are suitable for both residential and commercial applications.
6. Resistance to Temperature Fluctuations: Stainless steel can withstand extreme temperature changes without losing its structural integrity. This property is advantageous in environments where temperature variations are common.
7. Longevity:Due to its resistance to corrosion and wear, stainless steel shelves tend to have a longer lifespan compared to shelves made from other materials.

Commercial Gas Rice Steamer Machine Steamer Cabinet

The gas rice steaming cabinet has the characteristics of high efficiency, energy saving, fast cooking, multi-function, easy operation and cleaning, etc.

Characteristics of a gas steamer cabinet:
1.Efficient and Energy-saving: Gas steamer cabinets typically use natural gas or liquefied gas as their energy source, which is more energy-efficient compared to electric power, helping to reduce costs.
2.Quick Steaming: Using gas as an energy source provides high temperatures, allowing for the rapid generation of steam to sufficiently steam food in a shorter time.
3.Temperature Control: They feature precise temperature control, allowing for adjustments to steam temperature as needed, ensuring even heating of food.
4.Multi-functionality: Apart from steaming rice, some gas steamer cabinets are designed for multi-purpose use, suitable for steaming vegetables, meats, and other foods.
5.Ease of Operation: Typically designed with simplicity in mind, they are easy to operate with intuitive control panels and buttons.
6.Space-saving: Compared to traditional steaming equipment, gas steamer cabinets are usually more compact in design, helping to save kitchen space.
7.Easy to Clean: Most gas steamer cabinets are made of stainless steel or other easy-to-clean materials, making them relatively easy to maintain.
8.Durable: Constructed from sturdy and durable materials, gas steamer cabinets generally have a long lifespan.

Elcetric Pizza Deck Oven

PZD-4040 PZD-5269

As we know,an electric pizza oven is a kitchen appliance specifically designed for baking pizzas and other similar dishes. It operates using electricity as its power source, offering convenience and precise temperature control for achieving optimal cooking results.

Our models PZD-4040-01, PZD-4040-02 and PZD-5269-1, PZD-5269-2 further demonstrate the benefits of pizza ovens.

Applications:
● 1.Home Use: Electric pizza ovens are popular choices for home cooks who want to enjoy freshly baked pizzas without the hassle of using traditional ovens. They are compact and can be easily placed on countertops, making them suitable for smaller kitchens.
● 2.Quick Cooking: These ovens are known for their quick preheating times, allowing you to cook pizzas faster compared to conventional ovens. This is particularly helpful when you're short on time or hosting a gathering.
● 3.Versatility: While primarily used for pizzas, electric pizza ovens can also bake other items like flatbreads, calzones, cookies, and even reheat leftover food.

Features:
●1.Temperature Control: Electric pizza ovens typically come with adjustable temperature controls, enabling you to set and maintain the exact temperature required for baking different types of pizzas. This precision helps achieve consistent and even cooking.
●2.Timer: Many electric pizza ovens have built-in timers that allow you to set the cooking time. The oven will automatically shut off once the timer reaches zero, preventing overcooking and ensuring your pizza comes out perfectly.
●3.Compact Design: These ovens are designed to save space, making them ideal for apartments or kitchens with limited countertop area. Their compact size doesn't compromise their cooking capabilities.
●4.Ease of Use: Electric pizza ovens are user-friendly and don't require any special skills to operate. Just place the pizza on the designated rack or stone, set the temperature and timer, and let the oven do the rest.
●5.Consistent Results: With precise temperature control and even heat distribution, electric pizza ovens provide consistent results, ensuring that your pizzas are cooked to perfection every time.
●6.Easy Cleaning: Many electric pizza ovens come with removable parts that are easy to clean. This includes removable cooking racks, crumb trays, and sometimes even non-stick interiors.
●7.Energy Efficiency: Electric ovens are generally energy-efficient compared to traditional ovens, as they heat up quickly and don't require preheating for extended periods.

Electric Oven and Gas Oven

The choice between a gas or electric oven depends on various factors including cooking preferences, energy costs, and kitchen setup. Here are some considerations for each type:

Electric Ovens for Baking

Pros:
1.Even Heat Distribution:
●Electric ovens typically provide more consistent and even heat, which is crucial for uniform baking.
●They often have multiple heating elements that ensure the temperature is evenly distributed throughout the oven.

2.Temperature Accuracy and Stability:
●Electric ovens generally have better temperature control and stability.
●They maintain the set temperature more consistently, reducing fluctuations that can affect baking results.

3.Dry Heat:
●Electric ovens produce a dry heat, which is ideal for achieving crispy textures in baked goods like cookies, pastries, and crusts.

4.Convection Features:
●Many electric ovens come with convection settings that use a fan to circulate hot air, promoting even browning and faster cooking times.
●This is particularly useful for baking multiple trays at once.

5.Self-Cleaning Options:
●Electric ovens often come with self-cleaning features that make maintenance easier.

Cons:
1.Operational Costs:Electric ovens can be more expensive to run, especially in areas where electricity rates are high.
2.Preheating Time:Electric ovens typically take longer to preheat compared to gas ovens, which might be inconvenient for some users.
3.Power Outages:In the event of a power outage, an electric oven becomes unusable, which can be a significant drawback.

Gas Ovens for Baking

Pros:
1.Moist Heat:Gas ovens produce a more humid heat, which is beneficial for baking breads and items that require a moist interior and good rise.
2.Operational Costs:In areas where natural gas is less expensive than electricity, gas ovens can be cheaper to operate.
3.Faster Preheating:Gas ovens typically preheat faster than electric ovens, which can save time.
4.Usage During Power Outages:Gas ovens can still be used during power outages, provided they have a manual ignition option.

Cons:
1.Uneven Heat Distribution:Gas ovens often have hot spots and less even heat distribution, which can result in uneven baking.
2.Temperature Control:Maintaining a precise and consistent temperature can be more challenging in gas ovens.
3.Humidity:The humid heat produced by gas ovens might not be ideal for achieving crispy textures in baked goods.
4.Installation Costs:If a gas line is not already installed, the cost to install one can be significant.
5.Safety Concerns:There is a potential risk of gas leaks, which requires proper maintenance and monitoring.

Conclusion

For most baking tasks, electric ovens are generally preferred due to their even heat distribution, temperature accuracy, and features like convection baking. However, gas ovens have their own advantages, particularly for baking items that benefit from a moist cooking environment, such as breads. The choice ultimately depends on the specific baking needs, budget, and personal preferences.