{"id":994,"date":"2026-11-06T16:18:40","date_gmt":"2026-11-06T08:18:40","guid":{"rendered":"https:\/\/carbonizationplant.com\/?post_type=info&p=994"},"modified":"2026-11-06T16:18:43","modified_gmt":"2026-11-06T08:18:43","slug":"dry-ice-block-machine-working-principle","status":"publish","type":"info","link":"https:\/\/carbonizationplant.com\/ar\/Info\/dry-ice-block-machine-working-principle\/","title":{"rendered":"How Does a Dry Ice Block Machine Make Dry Ice Blocks?"},"content":{"rendered":"
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\n 4.9\/5 - (54 \u0635\u0648\u062a) <\/div>\n <\/div>\n\n

A dry ice block machine makes dry ice blocks in two physical stages. First, liquid CO2 expands through a nozzle and turns into fine dry ice snow at \u221278.5\u00b0C. Then a hydraulic press compresses that snow into a dense, solid block of 1,450\u20131,550 kg\/m\u00b3. No binder, no refrigerant, and no external freezing is involved. The whole cycle runs automatically and repeats every few minutes.<\/p>\n\n\n\n

Understanding this process helps you judge block quality, control production cost, and choose the right model. Below is a complete, data-based explanation of how a dry ice block making machine actually works.<\/p>\n\n\n

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\"Stainless
Stainless Steel Dry Ice Block Press Machine For Sale<\/figcaption><\/figure>\n<\/div>\n\n\n

What Is a Dry Ice Block Machine?<\/h2>\n\n\n\n

A dry ice block machine is a hydraulic press system that converts liquid carbon dioxide into solid dry ice blocks. It connects directly to a low-temperature liquid CO2 tank. Inside a fully enclosed chamber, the machine performs expansion, snow collection, compression, and demolding in one continuous cycle.<\/p>\n\n\n\n

Shuliy offers three models. The SL-120 produces 120\u2013180 kg\/h with 4 kW of power. The SL-240 and SL-300 deliver 200\u2013300 kg\/h. Block sizes are 125\u00d7105 mm or 210\u00d7125 mm, with thickness adjustable from 15 to 70 mm.<\/p>\n\n\n

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\"Dry
Dry Ice Block Machine For Food Industry Use<\/figcaption><\/figure>\n<\/div>\n\n\n

Why Does Liquid CO2 Turn into Dry Ice Snow at 42% Conversion?<\/h2>\n\n\n\n

The key to the whole process is the phase behavior of CO2. Liquid CO2 is stored at about \u221220\u00b0C and 2.0\u20132.2 MPa. Carbon dioxide cannot exist as a liquid at atmospheric pressure. Its triple point sits at 5.1 bar and \u221256.6\u00b0C.<\/p>\n\n\n\n

When liquid CO2 passes through the expansion nozzle, pressure drops suddenly to near-atmospheric level. Part of the liquid flashes into gas. This gasification absorbs a large amount of latent heat. The remaining liquid loses heat rapidly and freezes into fine dry ice snow at \u221278.5\u00b0C.<\/p>\n\n\n\n

Thermodynamics fixes the ratio. Under standard conditions, only about 42\u201345% of the liquid mass can become solid snow. The rest becomes cold CO2 gas. This is exactly why Shuliy machines specify a liquid-to-solid conversion ratio of \u226542%. The figure is not a marketing claim. It is the physical ceiling of the expansion process, and precise nozzle and chamber design keeps the machine at that ceiling.<\/p>\n\n\n

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\"Dry
Dry Ice Block<\/figcaption><\/figure>\n<\/div>\n\n\n

Step-by-Step: How Does a Dry Ice Block Maker Compress Snow into Blocks?<\/h2>\n\n\n\n

Once snow forms, the second stage begins. The complete working cycle of a dry ice block maker runs as follows:<\/p>\n\n\n\n

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  1. Liquid CO2 feeding.<\/strong> Liquid CO2 flows from the storage tank through an insulated inlet line into the sealed forming chamber.<\/li>\n\n\n\n
  2. Expansion and snow formation. <\/strong>The nozzle releases pressure. Snow falls and accumulates evenly in the compression cavity below.<\/li>\n\n\n\n
  3. Hydraulic compression<\/strong>. The press cylinder drives the punch downward. Loose snow at roughly 250\u2013600 kg\/m\u00b3 is compacted to 1,450\u20131,550 kg\/m\u00b3. The particles interlock mechanically under high pressure. No heat or additive is needed.<\/li>\n\n\n\n
  4. Pressure holding. <\/strong>The system holds pressure briefly. This step stabilizes block strength and reduces internal cracks.<\/li>\n\n\n\n
  5. Demolding and discharge. <\/strong>The mold releases and the finished block is pushed out automatically. The operator never touches the \u221278.5\u00b0C surface.<\/li>\n\n\n\n
  6. Cycle repeat. <\/strong>The punch resets and the next batch of snow forms. Models like the SL-300 complete this cycle fast enough to reach 200\u2013300 kg per hour.<\/li>\n<\/ol>\n\n\n\n

    Because the chamber is fully enclosed, the machine starts producing usable blocks immediately. There is no snow spray at startup and almost no material waste between cycles.<\/p>\n\n\n

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    \"Solid
    Solid CO2 Dry Ice Block Machine<\/figcaption><\/figure>\n<\/div>\n\n\n

    Which Parameters Affect Dry Ice Block Quality?<\/h2>\n\n\n\n

    Three parameters control whether a block survives transport and handling.<\/p>\n\n\n\n