Jinrongyuan Second Generation Rotary Oscillator: The Ideal Choice for Coal and Coal Gangue Leaching Tests

**In the fields of coal, environmental protection, and scientific research testing, the leaching test for coal and coal gangue is a core method for assessing their environmental risks and determining their leaching toxicity. Conducting standardized operations in accordance with GB/T 34230-2017 *"Leaching test method of coal and coal gangue"* is a prerequisite for ensuring data accuracy and reliable conclusions. As a pioneer in the field of rotary oscillators in China, Hunan Jinrongyuan Instrument Equipment Co., Ltd. has launched a rotary oscillator that meets the requirements of the national standard in every detail, providing you with a standard, efficient, and durable sample pretreatment solution.**

**I. Strict Compliance with National Standards, Ensuring Test Standardization**

GB/T 34230-2017 specifies clear technical parameters for leaching equipment, and the Jinrongyuan Rotary Oscillator fully complies:

*   **Precise and Controllable Rotation Speed:** Clause 6.2.1 of the standard requires that the leaching device can control the rotation speed at (30±2) r/min. This equipment adopts a precision speed control system, ensuring stable and reliable speed, guaranteeing thorough mixing of the sample and leaching solvent (water) during the up to 18-hour tumbling agitation, simulating the natural leaching process.
*   **Compatible with Standard Containers:** Clause 6.2.2 recommends using wide-mouth bottles with a capacity of approximately 1L, made of inert materials such as glass or polyethylene. The fixture design of the Jinrongyuan oscillator is compatible with 1L wide-mouth bottles of various materials, offering easy operation and eliminating cross-contamination between the sample and the equipment.
*   **Operation at Room Temperature:** Clause 6.3.2 specifies that the leaching process is conducted at **room temperature**. This equipment is specifically designed for ambient environments, adaptable to various laboratory conditions. It also allows for recording the room temperature as per clause 7.1.3.2, meeting data traceability requirements.
*   **Batch Processing Capability:** Capable of simultaneously loading **6 or more samples**, meeting the requirements for parallel samples and blank tests (Clause 6.4), significantly improving work efficiency.

**II. Second Generation Upgrade, Combining Durability and Convenience**

Jinrongyuan pioneered the development and sale of rotary oscillators for solid waste toxicity leaching tests in 2007. The current products feature comprehensive optimization in materials and structure:

*   **Strong Corrosion-Resistant Body:** Constructed with a **stainless steel casing** + **anti-corrosion coating**, effectively resisting liquid splashes that may occur during testing, extending the equipment's service life. It is particularly suitable for harsh environments involving prolonged contact with coal samples or leachate.
*   **Simple Bottle Loading Structure:** The box-type bottle loading design allows for quick and easy placement and removal of containers while ensuring the bottles remain stable during rotation, preventing loosening or falling off, and ensuring the continuous and stable progression of the test.

**III. Ensuring Leachate Quality from the Source, Aiding Accurate Assessment**

According to Appendix A of the standard, the concentrations of mercury, arsenic, fluoride, copper, nickel, zinc, lead, cadmium, and chromium in the leachate are the basis for determining whether coal and coal gangue exhibit leaching toxicity. The Jinrongyuan Rotary Oscillator, through standardized leaching pretreatment, ensures the representativeness and consistency of the leachate, providing reliable samples for subsequent determination according to methods like GB/T 3058 (Arsenic) and GB/T 16659 (Mercury). This helps you scientifically evaluate the environmental impact and reasonably formulate disposal measures.

**Hunan Jinrongyuan Instrument Equipment Co., Ltd.**
Dedicated to the R&D of sample pretreatment equipment, with national standards as our foundation and quality as our commitment.
Choose Jinrongyuan to make your leaching tests more standardized, efficient, and worry-free!