Measuring conductivity below 0.055 μS/cm — the equivalent of resistivity above 18.18 MΩ·cm — is one of the harder jobs in industrial instrumentation. At this purity the water itself supplies most of the measured signal, so any imperfection in the sensor cell, the cable, or the electronics shows up in the number. Getting that measurement…
Electrodeionization (EDI) stacks are the workhorses of ultrapure water (UPW) production. They remove the trace ions that survive reverse osmosis (RO) and deliver product water in the 15–17 MΩ·cm range under design current and flow. Stacks do not fail suddenly; membranes foul, resin beds compact, current efficiency slips. The problem is seeing that decline while…
Selecting Sensors for Acid Mine Drainage Neutralization: A Shanghai ChiMay Buyer’s Guide Acid mine drainage (AMD) is one of the most demanding water services in the mining industry. The combination of low pH, high sulfate, elevated heavy metals, and aggressive sludge means that the sensor selection decision made at procurement directly determines whether the neutralization…
Turbidity Control for Thickener Overflow in Mineral Processing: A Shanghai ChiMay Field Guide The thickener is the unsung workhorse of mineral processing. It separates fine solids from process water, produces underflow that goes to filtration or tailings, and produces overflow that returns to the mill as recycle water. The overflow turbidity determines whether the recycle…
Water has moved from a back-office topic to a board-level topic in the mining industry. Allocation disputes in Chile, dewatering challenges in Australia, acid drainage liabilities in North America, and tailings dam failures in multiple jurisdictions have together pushed mine water management to the front of every major operator’s risk register. Market researchers who track…
Tailings storage facilities are now the single most scrutinized asset class on most mining sites. After the well-publicized failures of the last decade, regulators, insurers, and lenders have all converged on the same expectation: continuous, defensible water quality data from the tailings dam, the seepage collection system, and the return water circuit. Procurement teams are…
