QST1200, QST1200 Concrete Mixing Plant for Ready-Mix Supply
QST1200

QST1200 Concrete Mixing Plant for Ready-Mix Supply

Twin-shaft forced mixing and PLC control for steady, high-volume concrete output.

The QST1200 is a stationary concrete mixing plant built for ready-mix suppliers and large civil works where batching accuracy and continuity of output decide the project schedule. A twin horizontal shaft forced action mixer does the central work, blending aggregate, cement, water and admixtures in a short cycle so each batch leaves the drum at a similar density and strength. The plant handles dry-hard, semi-dry-hard and plastic mixes without changing internals. Metering, feeding, mixing and discharge run through a networked automatic control system with a PLC and an industrial touch screen, so a recipe is set once and the cycle is followed on screen. Mixing blades cast in high chromium manganese alloy resist abrasion from crushed stone, and the shaft ends use a multi seal arrangement that keeps slurry out and lubricant in. Combined, the wear resistant internals and sealed shafts hold unplanned downtime low on sites running two or three shifts a day. Discharge feeds mixer trucks directly, and walkways are laid out for quick inspection and blade replacement. Two frame levels keep the aggregate handling area apart from the cement and admixture lines, so fine material does not contaminate the coarse bins.

Category
Packaging & Auxiliary Equipment
Customization
Designed to your site and target output
Warranty
12 months on main components

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Product Description

<h2>Stationary Output for Daily Pour Schedules</h2><p>The QST1200 concrete mixing plant is configured for sites that pour every working day: ready-mix depots, civil contractors and industrial builders who cannot wait on batches. Material flow from the aggregate bins through the mixer to the discharge point is arranged so that charging, mixing and emptying overlap instead of running one after the other. That overlap is what keeps hourly throughput steady when a project switches from one concrete grade to the next inside the same shift.</p><p>Because the unit is stationary, frames, bins and walkways are sized for long service rather than transport. Operators reach the mixer platform, the cement screw and the water and admixture lines from one deck, which shortens the daily inspection walk and keeps the working area clear.</p><h2>Twin-Shaft Forced Mixing and Batch Consistency</h2><p>At the centre of the plant sits a twin horizontal shaft forced action mixer. Two counter-rotating shafts pull the charge in opposite directions, so aggregate, cement, water and admixtures meet in a fast rolling motion rather than a slow tumble. This is why the same machine covers dry-hard, semi-dry-hard and plastic mixes without internal changes, and why segregation at the end of the mix is rarely a problem.</p><p>Metering runs on separate channels for aggregate, cement, water and admixture. Correct proportioning at the gate is the cheapest way to protect strength, because extra mixing time cannot rescue a batch that was weighed wrong in the first place.</p><h2>PLC Control, Monitoring and Batch Records</h2><p>The control package combines a PLC, an industrial touch screen and networked monitoring. Recipes are stored as numbers, not as operator memory, so a change of shift does not change the mix. The screen follows the sequence live through weighing, feeding, mixing and discharge, and alarms point to the step that stopped rather than reporting a bare fault code.</p><p>Batch data can be logged and reviewed remotely, which matters when a client asks for proof of what was delivered. Traceable records also expose a slow drift in aggregate moisture or cement flow before it turns into a rejected load.</p><h2>Wear Parts Chosen for Abrasive Aggregate</h2><p>Mixing blades are cast in high chromium manganese alloy, selected for impact and abrasion resistance when crushed stone and gravel pass through the drum week after week. Shaft ends use a multi seal arrangement that separates the bearing housings from the wet side of the mixer, keeping slurry out and lubricant in.</p><p>Those two details decide how often the mixer is opened for repair. Plants running two or three shifts feel it most, because a leaking shaft seal stops production at the worst possible time. Blade clearance can be adjusted, so a worn set returns to tolerance before it is replaced.</p>

Key Features

  • Twin horizontal shaft forced action mixer blends dry-hard, semi-dry-hard and plastic mixes uniformly.
  • PLC with industrial touch screen runs weighing, feeding, mixing and discharge as one automatic sequence.
  • Mixing blades cast in high chromium manganese alloy resist impact and abrasion from crushed stone.
  • Multi seal shaft ends stop slurry leakage and dust entry, reducing unplanned mixer downtime.
  • Batch data logging and networked monitoring give traceable records for every delivered load.

Send us your requirements

Tell us your target output and the raw materials you have, and we will send a detailed quotation.

Technical Parameters

Parameter QST1200
Model QST1200
Plant type Stationary concrete mixing plant
Mixer type Twin horizontal shaft forced action mixer
Concrete mixes Dry-hard, semi-dry-hard and plastic
Control system PLC with industrial touch screen and networked monitoring
Blade material High chromium manganese alloy
Shaft sealing Multi seal structure against slurry and dust

The pictures and parameters above are for reference only, and the final interpretation right belongs to our company. Final specifications are confirmed in the contract.

Inquire about this machine

Send us your requirements for the QST1200 and we will come back with the machine list, a layout drawing and a price.

  • The products you want to make and their sizes
  • The output you need per shift
  • The raw materials available to you
  • Site area and available power supply

Enquiry about: QST1200, QST1200 Concrete Mixing Plant for Ready-Mix Supply

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Frequently Asked Questions

Which concrete mixes can the QST1200 plant produce?
The twin horizontal shaft forced action mixer covers dry-hard, semi-dry-hard and plastic mixes without changing internal parts. Contractors use it for structural grades, pavement concrete and precast mixes on one machine, adjusting the recipe in the control panel rather than rebuilding the mixer. That flexibility keeps a plant useful when a project moves from foundations to finishing works.
How does the plant keep batch proportions accurate during a shift?
Aggregate, cement, water and admixture each run through a separate metering channel, and the PLC compares every weighing against the stored recipe before the gate opens. Because the recipe lives in the controller rather than in operator memory, a change of shift or operator does not shift the mix. Logged batch data lets the supervisor spot a slow drift early.
Which parts of the mixer need the most attention?
Mixing blades and shaft seals wear first. Blades are cast in high chromium manganese alloy for abrasion resistance against crushed stone, and clearance can be adjusted before replacement. The multi seal shaft ends separate bearing housings from the wet side, so checking them on a fixed schedule is the cheapest way to avoid slurry leakage and an unexpected stop.
Can production data be reviewed from the office?
Yes. The control system supports networked monitoring and remote review of batch records, so tonnage and mix grades can be checked without standing at the plant. For contractors billing by delivered volume this is useful proof, and for quality control it shows whether a strength problem came from the mix design or from the weighing stage.

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