Briquetting machines are essential in compressing various raw materials into compact, manageable briquettes for easier storage, transportation, and usage. However, one common operational challenge is machine jamming. A jammed briquetting machine can disrupt production, cause equipment damage, and increase maintenance costs. Understanding the root causes of jamming, the warning signs, and effective prevention strategies is crucial for maintaining smooth and efficient briquetting operations.

What should I do if the briquette machine jams

1. Immediate Safety Measures:

Stop the Machine: Immediately turn off the power to the briquette machine. Do not attempt to clear the jam while the machine is running.

Disconnect Power: For added safety, unplug the machine from its power source. This prevents any accidental start-up during the clearing process.

Wait for it to Stop Completely: Ensure all moving parts have come to a complete standstill before attempting to intervene.

2. Identify the Cause of the Jam:

Carefully inspect the machine to understand why it has jammed. Common causes include:

Material Blockage:

Oversized Material: Pieces of raw material that are too large to pass through the machine.

Foreign Objects: Rocks, metal pieces, or other debris mixed in with the raw material.

Wet or Sticky Material: Material with excessive moisture content or a sticky consistency can clump and cause blockages.

Inconsistent Material Size: A wide range of particle sizes can sometimes lead to bridging and jams.

Machine Issues:

Worn or Damaged Parts: A worn die, screw conveyor, or other internal components can impede material flow.

Improper Temperature: If the machine uses heat, incorrect temperature settings can affect material flow and cause sticking.

Insufficient Lubrication: Lack of lubrication can increase friction and lead to jams.

Overfeeding: Trying to process too much material at once can overload the machine.

3. How to Clear the Jam:

Refer to Your Machine’s Manual: Your briquette machine’s manual should provide specific instructions on how to clear jams and troubleshoot common issues. Always prioritize the manufacturer’s recommendations.

…

More detailed information about what to do when the briquette machine is stuck can be clicked to visit the: https://www.zymining.com/en/a/news/briquetting-machine-jam.html

Slow discharge from a linear vibrating screen is a common issue that can significantly reduce screening efficiency and overall plant productivity. It means material is not moving across and off the screen deck as quickly as it should.

Reasons and solutions for slow discharge of linear vibrating screen

I. Reasons Related to the Screen Mesh & Deck:

Blinding or Pegging of the Screen Mesh:

Reason: Fine particles get stuck in the openings of the screen mesh (blinding), or near-size particles get wedged in the openings (pegging). This reduces the effective open area, slowing down the passage of undersize material and causing oversize material to build up and discharge slowly.

Solution:

Regular Cleaning: Manually clean the mesh with brushes, pressure washers, or air lances.

Anti-Blinding Devices: Install bouncing balls, slider rings, or polyurethane stars beneath the screen mesh. These continuously tap the mesh from below, dislodging stuck particles.

Ultrasonic De-blinding Systems: For very fine or difficult materials, ultrasonic systems vibrate the mesh at high frequencies, preventing blinding.

Self-Cleaning Mesh: Use specialized screen media with flexible wires that vibrate independently to dislodge particles.

Adjust Mesh Tension: Ensure the mesh is properly tensioned. Sagging mesh can exacerbate blinding.

Incorrect Screen Mesh Aperture (Opening Size):

Reason: If the mesh openings are too small for the desired separation or for the bulk of the material, it will naturally process material slowly.

Solution:

Re-evaluate Application: Ensure the chosen mesh size is appropriate for the material characteristics and the desired cut point.

Consider a Coarser Mesh: If possible and acceptable for the product, use a slightly larger mesh opening.

Worn or Damaged Screen Mesh:

Reason: Torn, stretched, or excessively worn mesh can lose its tension, sag, and have inconsistent openings. This can lead to material pooling in areas and inefficient conveying.

Solution:

Inspect and Replace: Regularly inspect the mesh for wear and tear. Replace damaged sections or the entire mesh panel as needed.

Insufficient Screening Area:

Reason: The screen might be too small for the volume of material being fed onto it, leading to overloading.

Solution:

Reduce Feed Rate: If possible, reduce the amount of material being fed to the screen.

Upgrade Screen Size: If the feed rate cannot be reduced, a larger screen or an additional screen may be necessary.

Sagging Screen Mesh:

Reason: Improper tensioning or wear can cause the mesh to sag. Material accumulates in the sagged areas, slowing its progress.

Solution:

Proper Tensioning: Ensure all tensioning bolts and mechanisms are correctly adjusted according to the manufacturer’s specifications.

Support Bars: Check if support bars beneath the mesh are adequate and in good condition.

II. Reasons Related to Vibration Parameters:

Incorrect Stroke (Amplitude):

Reason: If the stroke (the distance the screen moves with each vibration) is too small, the material won’t be lifted and thrown forward effectively, especially coarser or heavier materials.

…

More about linear vibrating screen discharge slow detailed fine information can be clicked to visit: https://www.hsd-industry.com/news/linear-vibrating-screen-discharges-slowly/

Vibrating screens play a crucial role in material screening across various industries, relying heavily on electric motors to drive vibration. However, one common and potentially damaging issue is motor overheating. Overheating not only shortens the lifespan of the motor but also leads to decreased efficiency, unexpected downtime, and costly repairs. Understanding the causes, signs, and prevention methods of vibrating screen motor overheating is essential to ensure continuous, reliable operation and to extend equipment life.

Vibrating Screen Motor Overheating Solution

Immediate Actions (Safety First!):

Stop the Screen Immediately: Turn off the vibrating screen and ensure it cannot be accidentally restarted (lockout/tagout procedures are crucial here). Continuing to run an overheating motor can cause it to burn out or create a fire hazard.

Allow it to Cool Down: Let the motor cool down completely before attempting any inspection or maintenance. Do not touch the motor housing as it can be extremely hot and cause burns.

Troubleshooting and Investigation (Once the Motor is Cool):

Identify the Cause: Try to determine why the motor is overheating. Common causes include:

Overloading: Is the screen being fed more material than it’s designed for?

Voltage Issues: Is the voltage supply to the motor too high or too low?

Bearing Problems: Are the motor bearings worn out, lacking lubrication, or contaminated? This is a very common cause of motor overheating in vibrating screens.

Insufficient Lubrication: Lack of proper lubrication in the motor bearings or other moving parts of the vibrating mechanism can cause excessive friction and heat.

Excessive Lubrication: Surprisingly, too much grease can also cause overheating by creating excessive churning and heat buildup.

Improper Lubricant: Using the wrong type or grade of lubricant can lead to inadequate lubrication and overheating.

Dust and Debris Buildup: Accumulation of dust and material on the motor housing can act as insulation, preventing proper heat dissipation.

Poor Ventilation: Is the motor adequately ventilated? Obstructions around the motor can trap heat.

Loose Connections: Loose electrical connections can cause increased resistance and heat generation.

Mechanical Issues: Are there any mechanical obstructions or imbalances in the screen or drive mechanism that are putting extra load on the motor?

…

More detailed information about how to do vibrating screen motor overheating can be clicked to visit: https://www.hsd-industry.com/news/vibrating-screen-motor-overheating/

When comparing PE (Polyester) vs. PVDF (Polyvinylidene Fluoride) coated aluminum sheets, the “better” option depends on your specific needs for durability, environment, budget, and aesthetics.

PE vs PVDF Coated Aluminum Sheets

PE (Polyester) Coated Aluminum Sheets

Type: A standard, widely used thermosetting polymer coating.

Durability/Lifespan: Moderate. Typically offers a shorter service life compared to PVDF, especially in harsh environments.

Weather Resistance (UV, Rain, Temperature): Good, but susceptible to degradation over time from prolonged UV exposure. Can fade and chalk (develop a powdery surface) more quickly than PVDF, particularly with darker colors in sunny climates.

Color Retention: Fair to Good. Colors can fade noticeably over 5-10 years, depending on the environment and color intensity.

Chalking Resistance: Fair. More prone to chalking than PVDF.

Gloss Retention: Fair to Good. Gloss level can diminish over time due to weathering.

Chemical Resistance: Moderate.

Flexibility/Formability: Generally good, allowing for bending and shaping without cracking the coating (within limits).

Hardness/Scratch Resistance: Moderate.

Cost: Lower. This is its primary advantage. Significantly cheaper than PVDF.

Typical Warranty: Often in the range of 5-15 years (highly variable by manufacturer and specific product).

Typical Applications:

Interior decoration (ceilings, wall panels)

Signage

Short-to-medium term exterior applications

Areas with moderate weather conditions

Budget-sensitive projects

Rain gutters, downpipes (where aesthetics might be less critical long-term)

PVDF Coated Aluminum Sheets

Type: A premium, high-performance fluoropolymer coating. Often uses resins like Kynar 500® or Hylar 5000® (typically requiring a minimum of 70% PVDF resin for optimal performance).

…

More details about PE vs PVDF coated aluminum sheet: Which is better: https://www.dw-al.com/a/news/pe-vs-pvdf-coated-aluminum-sheet.html

Graphite crucibles are essential tools in high-temperature applications like metal melting, casting, and chemical processing. Their lifespan significantly impacts operational costs and productivity. Extending the life of your graphite crucible is crucial for both safety and cost-effectiveness. Graphite crucibles are susceptible to thermal shock, oxidation, and chemical attack.

Tips to Extend the Life of Graphite Crucibles

1. Handling and Storage:

Handle with Care: Graphite is brittle. Avoid dropping or banging the crucible. Use properly fitting tongs or shanks designed for your crucible size and shape. Don’t roll it on the floor.

Store in a Dry Place: Graphite is porous and can absorb moisture. If heated rapidly with moisture inside, the steam generated can cause cracking or even explosion. Store crucibles off the floor in a warm, dry area. Keep them in their original packaging if possible until use.

Avoid Mechanical Stress: Don’t wedge tools or charge material tightly inside, which can cause stress during heating and expansion.

2. Preheating (Crucial!):

First Use Preheating: New crucibles must be preheated slowly and thoroughly to drive off any absorbed moisture and to temper the binder. Follow the manufacturer’s specific instructions. This often involves heating slowly to ~200-300°C (400-570°F), holding for a period, then slowly increasing to operating temperature.

Preheat Before Each Use: Even if stored correctly, preheating before every melt is good practice, especially in humid environments. A slow warm-up minimizes thermal shock.

3. Charging (Loading Metal):

Load Gently: Don’t drop heavy ingots or scrap directly into the bottom of a cold or even hot crucible. Place them carefully.

Even Loading: Distribute the charge material as evenly as possible to promote uniform heating.

Avoid Wedging: Don’t pack material tightly. Allow room for expansion as the metal heats and melts.

…

For more detailed information on tips to extend the life of graphite crucibles, please click here: https://www.czgraphite.com/a/news/graphite-crucible-life-extension-tips.html