Rutile conversion trial operation plan

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Rutile Production Transition Pilot Plan: In order to better meet market demands and expand the company’s product portfolio, the company began to expand its rutile post-treatment workshop in 2006; it is now ready for operation in this new capacity. Given the current market conditions, rutile products offer both a higher market share and greater profit margins compared to anatase products. Therefore, the company has decided to shift to producing rutile products in order to foster better business development, achieve higher profits, and improve the quality of its products. The pilot plan is outlined as follows: I. General requirements for the plan: 1. Clearly define the stages of the production transition process to minimize the amount of mixed-crystal products produced； 2. Ensure that the trial run for the production shift is successful from the first attempt; pay special attention to quality to guarantee perfection and prevent defective products from arising, which could cause significant financial losses to the company. Any issues that may arise during testing are addressed promptly; there are plans in place, and the testing team decides how to handle unexpected problems ； 3. The preliminary work for chemical plant commissioning has been properly carried out, with strict organization and orderly coordination among all parties involved. II. Requirements for organizing the commissioning plan: 1. Establish a commissioning leadership team responsible for coordinating activities during the commissioning process and addressing any issues that arise. The leadership team should include professionals in areas such as process engineering, equipment, electrical and instrumentation systems, and safety ； 2. Determine the commissioning schedule and strictly adhere to it to avoid chaos ； 3. The trial run summary should be timely and comprehensive. III. Specific plan: (I) Preparation work: Ensure stable system operation prior to the production shift, with all processes in good working condition. In particular, the following tasks need to be carried out properly: a) The Titanium Workshop must maintain the quality and quantity of concentrated titanium solution, adhering to the six key performance indicators, and must especially prevent early hydrolysis ； b. In the water washing process in Workshop 2 (the second washing step), the iron content should be such that Fe2O3 ≤ 50 ppm; ideally, Fe2O3 should be ≤ 30 ppm, to ensure the purification of metatitanic acid after washing ； c. Strictly control the hydrolysis process to prevent fluctuations in the particle size due to variations in heating time; pay special attention to aspects such as seed crystal preparation, seed crystal mixing, and the stability of the material being discharged ； d. Preparation and addition of rutile seeds: Strictly follow the requirements regarding dosage, temperature control, and washing outlined in the seed preparation procedures. First, ensure the proper rutile content in the rutile seeds; maintain strict control over the concentration when adding them during the bleaching process and add them accurately. At the same time, monitor the washing process to ensure that the amount of rutile seeds added meets the requirements for conversion, while also preventing any negative effects on the washing process ； e. In the salt treatment station, the concentration of the salt used for treatment must be strictly controlled to ensure the stability of the treatment reagents and their accurate addition, thereby reducing fluctuations during the calcination process ； f. In the calcination stage, strict adherence to the requirements for rutile calcination is necessary; analysis of the rutile content and color must be carried out to produce high-quality rutile products after calcination ； g. Raymond grinding: A precisely measured amount of grinding aid (dispersant) is added to produce qualified rough rutile product. (II) Post-treatment commissioning plan: 1. Ensure the completeness of auxiliary systems, and complete the individual unit tests as well as pressure testing and acceptance procedures for pipes, valves, pumps, mixing equipment, transportation equipment, etc ； 2. The workshop is staffed adequately, with a comprehensive staffing system in place; employees are assigned to their respective positions and have received proper training ； 3. The safety checks prior to commissioning are passed, the complete set of equipment has been approved for acceptance, and personnel from the manufacturer are present to guide the commissioning process ； 4. The raw materials and auxiliary materials required for testing shall be delivered to the warehouse and pass the inspection ； 5. Verification of the rationality of system configuration, including capacity, the status of individual unit tests, and the satisfaction of overall conclusions; the conditions for feeding materials and conducting joint tests are met. This includes the following aspects: a. A thorough inspection to ensure that the configurations for various post-treatment tasks are adequate, that pipeline arrangements are proper, and that electrical and instrumentation systems are functioning correctly; special personnel are responsible for making records and providing confirmations ； b. Complete operating procedures, process specifications, safety regulations, and analysis protocols, which serve as the basis for operations during the commissioning process, must be approved uniformly by the company; any aspects that require investigation during commissioning must be confirmed by the chief engineer’s office ； c. Are water, electricity, gas, and steam (including superheated and saturated states) meeting the requirements for safe operation? ； d. All records required for commissioning are complete ； e. The measurement and analysis instruments required for the position are complete ； f. Complete analytical instruments and medications ； g. The chief operator is responsible for the operations during the testing phase, with the assistant operator providing assistance ； 6. Commissioning schedule: Before the chemical plant is commissioned, single-unit testing and joint testing must be carried out first; the specific commissioning schedule is detailed in the attached table. a. The testing is carried out sequentially according to the procedures specified in the process guidelines; in principle, each step takes between 12 and 24 hours. Only after the quality checks for each step meet the required standards can the process move on to the next stage, with every effort being made to prevent substandard materials from progressing to subsequent stages ； b. The daily production volume during the chemical plant commissioning is determined by the commissioning team, and it is not necessarily in strict accordance with the designed capacity ； c. The commissioning team holds a regular meeting every day to address the issues that arise during the commissioning process, and all identified problems are recorded accurately for each stage of work ； 7. Test Run Summary: In addition to the daily summary meetings held to review the work completed that day and plan the tasks for the following day, the test run team records the progress of the tests on a daily basis in the form of brief reports. These reports include analyses of the quality of various processes, production figures, the operation of equipment and electrical instruments, as well as information regarding other organizational matters. The test team may arrange additional meetings as appropriate to handle related matters in a centralized manner, with the aim of producing a comprehensive test summary. Appendix: 1. Process Operation Procedures (Safety Procedures) ； 2. Commissioning schedule ； 3. Requirements for indicators in each process ； 4. Raw material and auxiliary material plan (including quality standards) ； 5. Members of the commissioning leadership team and their responsibilities. Post-treatment Testing Team