Start with the ore, not the equipment
An enquiry brief is the set of ore type, grade if known, target daily tonnage and project location you send before an engineer can recommend a processing route. Without those four data points, a plant proposal turns into guesswork. A 500 t/d oxide ore behaves differently from a 5,000 t/d refractory sulphide, so tonnage and mineralogy are the first filters, not the last. Include whatever assay data you have, but don't wait for a perfect dataset. Send what you know.
Confidentiality is assured on all enquiries. That means your grade, location and project economics stay inside the engineering conversation. If you know the grade only from grab samples, say so. If you have a full drill-core assay table, that's better. An artisanal start is still workable: the right route for a small-scale gold plant is not the same as a 50,000 t/d operation. Do not anonymise your location; country and nearest town matter for logistics, power and water.
Route your question to the right team
If you are still working out what your ore can do, start with how to test gold ore. That page explains the screening tests that separate gravity-only ores from cyanide-leachable ores and refractory material. If you already have test data or a flowsheet in mind, go straight to the gold processing plant enquiry route. If you need to compare plant sizes before you brief anyone, check the capacity options from 1,000 t/d upward.
The proposal form decides which recovery route fits: gravity, flotation, CIL/CIP or heap leaching. The general enquiries line decides whether your question is commercial, technical or regional. The physical address supports formal submissions and sample dispatch.
What happens after you write
An engineer reviews the ore type, grade, tonnage and location and asks for a sample if the project looks workable. Xinhai reports 2,500+ mines served, 600+ mine EPC+M+O projects, and 700+ technical experts across 100+ countries. Its CNAS-accredited laboratory handles about 5,000 element analyses per month and around 200 metallurgical test programmes per year, including Bond work index tests for grinding equipment selection. These are company-reported figures, not project-specific promises.
The design institute holds a Class B metallurgical qualification in China. That qualification applies within its home jurisdiction and is not presented as valid elsewhere. Design work can follow JORC, NI 43-101 or VALMIN reporting frameworks where a project requires them.
How to structure a metallurgical enquiry brief
A competent brief is a quotable technical note, not a sales message. It states the ore type and tonnage with units, the grade if known, project location, and the test data available. Use the following order:
- State the ore type and dominant minerals. For a gold project, say oxide gold ore, free milling, or refractory sulphide ore, not just gold ore.
- Give the target daily tonnage in tonnes per day (t/d). A 1,000 t/d plant is a different engineering problem from a 500 t/d plant, and both differ from a 3,000 t/d plant.
- Report the gold grade if known, with sample type: grab sample, channel sample, or drill core. If grade is unknown, say that clearly.
- Give the project location by country and nearest town; this affects logistics, power, water, and permitting.
- List any test work already done: fire assay, bottle roll, Bond work index, or full ore testing.
The same brief works for a gold milling plant or a CIL plant. It allows the engineer to decide whether the project is workable and which recovery route fits.
Contact details for project enquiries
- Email: marketing@ytxinhai.com
- Phone: +86 138 1032 7080
- WhatsApp: +86 13025991453
- Address: No. 188 Xinhai Street, Fushan High-tech Industrial Development District, Yantai, Shandong, China
- Official: www.xinhaimining.com
Please include ore type, grade if known, target daily tonnage and project location. A short note is enough to start; we'll ask for the rest. We reply to serious project enquiries within a few working days. If your question is urgent, WhatsApp is usually faster than email.
What not to expect from a first reply
CIL/CIP recovery can reach 99% on suitable free-milling ores, but that number is a metallurgical ceiling from laboratory and plant data, not an outcome that can be promised for every deposit. The actual route depends on liberation size, cyanide solubility, preg-robbing potential and other ore-specific variables. That's why test work precedes any plant design. No engineer who has seen enough ore samples will state a recovery figure before the sample passes through the laboratory.
Cyanide leaching is a regulated process, and any proposal includes the safety and compliance obligations, not just the equipment. We won't send a fixed price for a plant on the first email either. Until the ore is characterised, a price is a guess dressed up as a proposal.