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Views: 0 Author: Site Editor Publish Time: 2026-09-28 Origin: Site
Choosing an Ester 105 manufacturer is not simply a matter of comparing price per ton. For a flotation plant, the more important questions are whether the collector matches the ore, whether active ingredient and batch consistency are controlled, whether packaging is suitable for international transport, and whether the supplier can support laboratory testing and plant trials.
This Ester 105 buyer guide explains the product's role in flotation, suitable ore types, important quality checks, packaging considerations, supplier evaluation criteria, and the information buyers should prepare before requesting a quotation.
Table of Contents
Ester-105 is a flotation collector used primarily in sulfide mineral processing, particularly where copper-bearing minerals and gold-associated sulfides require effective collection with useful selectivity.
Within a flotation circuit, the collector changes the surface properties of target minerals so that they can attach more readily to air bubbles and report to the concentrate.
However, Ester-105 should not be selected only because it is described as a “strong collector.” The correct reagent depends on the mineral assemblage, oxidation state, pH, grind size, water chemistry and the other collectors, frothers and modifiers already used in the circuit.
Junbang includes Ester-105 within its broader Thiocarbamate collector range, which is targeted mainly at selective flotation of copper-bearing and gold-bearing sulfide minerals.
For procurement teams, this means Ester-105 should be treated as part of an overall flotation reagent scheme, rather than as a commodity chemical that can be purchased only according to unit price.
The strongest application case for Ester-105 is generally found in sulfide flotation, particularly copper and copper-gold systems.
Copper-bearing minerals such as chalcopyrite and other flotation-responsive copper sulfides are important application targets.
In these circuits, the plant usually needs to balance two objectives:
recover as much valuable copper as possible while limiting excessive recovery of pyrite and other unwanted minerals.
A collector should therefore be evaluated not only by recovery but also by concentrate grade and overall selectivity.
Ester-105 may also be considered where gold is associated with floatable sulfide minerals, especially in copper-gold flotation circuits.
The key point is that the reagent is not necessarily collecting free gold directly. In many ores, flotation performance depends on recovering the sulfide minerals with which gold is associated.
For this reason, buyers should tell the manufacturer whether the gold occurs with chalcopyrite, pyrite, arsenopyrite or another mineral phase.
Complex feeds may contain copper, lead, zinc, iron sulfides and precious-metal-bearing minerals in the same ore.
In these situations, the question is not simply whether Ester-105 can “float sulfides.” The more important question is:
Which minerals should float, and which minerals must remain depressed?
Bench testing is particularly important for polymetallic feeds because collector strength that improves rougher recovery may also make downstream separation more difficult.
A professional buyer should compare Ester-105 with alternative collectors based on the actual flotation objective rather than chemical category alone.
Junbang's product portfolio also includes xanthate collectors, dithiophosphate collectors and Isopropyl Ethyl Thionocarbamate, commonly known as Z-200.
These collectors can have different balances of collecting strength, selectivity, kinetics and compatibility with the rest of the flotation reagent system.
Collector Option | Main Buyer Consideration |
|---|---|
Ester-105 | Evaluate for copper sulfide and gold-copper circuits where collector performance and selectivity must be balanced |
Xanthates | Widely used sulfide collectors with different strengths depending on alkyl chain and product type |
Dithiophosphates | Often evaluated where selectivity and precious-metal response are important |
Z-200 | Selective thionocarbamate collector commonly evaluated for copper and gold-associated sulfides |
Collector Blends | May improve recovery-selectivity balance where a single collector does not provide the required metallurgical response |
A plant therefore should not ask only:
“Is Ester-105 better than xanthate?”
A more useful question is:
“Under our mineralogy, pH and existing reagent scheme, does Ester-105 improve recovery, grade or total reagent cost compared with our current collector?”
That question can be answered through controlled flotation testing.
When comparing Ester 105 manufacturers, product specifications should be one of the first areas reviewed.
The current Junbang Ester-105 product information includes two active-ingredient grades:
Item | Grade 1 | Grade 2 |
|---|---|---|
Active Ingredient | ≥80% | ≥75% |
Form | Liquid | Liquid |
Typical Appearance | Dark brown | Dark brown |
Standard Packaging | 200 kg iron drum | 200 kg iron drum |
The final specification should always be confirmed in the quotation, technical data sheet and batch certificate of analysis.
Active ingredient is particularly important because plant consumption should ultimately be evaluated according to the amount of effective collector delivered.
A lower quoted price per ton may not represent a lower treatment cost if the supplied reagent contains less active material or requires a higher plant dosage.
Buyers should therefore compare quotations on an equivalent active-ingredient and flotation-performance basis, not merely on gross product weight.
Large unexplained changes in appearance, viscosity or phase condition between deliveries can indicate product or storage inconsistencies.
A qualified supplier should have defined acceptance criteria and batch inspection procedures rather than relying only on visual inspection at the customer's site.
For repeat industrial purchases, buyers should request a COA for each production batch and confirm that the testing method remains consistent.
The COA should be compared with the agreed purchasing specification before the reagent is introduced into the plant.
Because Ester-105 is an industrial flotation chemical, the buyer should obtain an up-to-date SDS and any documentation required for storage, handling and transportation in the destination market.
The technical specification and safety documentation serve different purposes and both should be reviewed.
A reagent may perform well during laboratory qualification but still cause operational problems if commercial shipments vary significantly from batch to batch.
This matters because the flotation plant normally sets its collector dosage around an expected reagent response.
If active content or product characteristics change, operators may observe changes in:
collector consumption, recovery, concentrate grade, froth behavior and required dosage.
This can lead operators to adjust the flotation circuit even though the real source of variation is the reagent itself.
For this reason, a buyer evaluating an Ester 105 manufacturer should ask how the supplier controls raw materials, reaction conditions, finished-product testing and batch traceability.
Junbang states that its production system uses DCS automatic control and that quality testing covers both raw materials and finished products. Its quality management system is operated according to ISO9001 requirements, while its mineral processing research capability is used to evaluate reagent performance for different ores.
More information about its production and quality system is available on the Junbang company page.
Packaging is often treated as a logistics detail, but for mining chemicals it can affect handling efficiency, storage planning and delivered cost.
Junbang's current Ester-105 export specification uses 200 kg iron drums.
Before confirming an order, procurement teams should check four points.
First, confirm the net weight per drum and total number of drums.
Second, confirm whether the packaging is suitable for the planned sea, road or multimodal transport route.
Third, review unloading and storage arrangements at the mine or reagent warehouse.
Fourth, confirm labeling, batch identification and documentation requirements for the destination country.
For large orders, the buyer should also compare container utilization and total landed cost rather than considering product price separately from packaging and freight.
If a mine requires a different packaging format, this should be raised during the inquiry rather than after production has already started.
A strong supplier assessment should cover both chemical manufacturing capability and mineral-processing support.
The first question is whether the company is actually involved in production or acts only as an intermediary.
Direct manufacturing control can make it easier to trace raw materials, investigate quality deviations and maintain stable specifications between orders.
Junbang identifies itself as a production enterprise integrating manufacturing, R&D, trade and technical services.
Ask how incoming materials, production parameters and finished products are inspected.
A statement such as “high quality” is not enough. Buyers should look for measurable specifications, COAs, testing procedures and traceability.
A sample allows the mine to verify physical properties and, more importantly, carry out flotation testing before committing to a commercial order.
Junbang states that samples are produced using the same production process and materials as mass-production orders.
For flotation chemicals, this is important because the sample should be representative of the product that will later be supplied in bulk.
A chemical supplier does not need to design the entire concentrator, but a specialist flotation-reagent manufacturer should understand how its product interacts with mineralogy and the flotation circuit.
Useful technical support may include bench flotation tests, collector comparisons, dosage evaluation and assistance interpreting plant trial results.
This is especially valuable when the mine is replacing an existing xanthate or combining Ester-105 with another collector.
A technically suitable reagent still creates risk if the supplier cannot maintain predictable production and delivery.
Procurement teams should review production capacity, normal lead time, export experience, shipping terms and contingency arrangements before approving a supplier for regular plant use.
The cheapest FOB quotation is not necessarily the lowest-cost reagent.
A proper comparison should consider:
Cost Factor | What the Buyer Should Compare |
|---|---|
Product Price | Price per ton under the same Incoterm |
Active Ingredient | Effective collector content, not only gross product weight |
Plant Dosage | Actual kg or g required per tonne of ore |
Metallurgical Performance | Recovery, grade and selectivity |
Packaging | Drum cost, handling and container utilization |
Freight | Port, route and destination costs |
Supply Consistency | Risk of batch variation or delayed shipment |
Technical Support | Testing and plant-trial assistance |
Documentation | COA, SDS and shipment documents |
Ultimately, the most useful commercial figure is often collector cost per tonne of ore treated, combined with the resulting metallurgical performance.
For example, a reagent priced higher per tonne may still reduce overall flotation cost if its effective plant dosage is lower or if it improves concentrate value.
Conversely, a low-priced collector that increases pyrite recovery or requires substantially more dosage may be more expensive in real operating terms.
A buyer who sends only “Please quote Ester 105” will usually receive only a basic commercial quotation.
A stronger inquiry gives the manufacturer enough information to recommend the correct grade, packaging and test program.
Include the following information when possible:
Ore type and main valuable minerals
Main gangue and unwanted sulfide minerals
Target metal, such as copper, gold or copper-gold
Head grade or typical feed composition
Current collector and dosage
Flotation pH
Grind size or P80
Rougher, cleaner or scavenger application
Current recovery and concentrate-grade targets
Plant throughput
Required Ester-105 quantity
Preferred active-ingredient grade
Packaging requirement
Destination country and port
Required Incoterm
COA and SDS requirements
Sample quantity required for laboratory testing
Expected purchasing schedule
Providing these details allows the supplier to respond as a flotation-reagent partner rather than simply quoting a chemical by name.
Ester-105 is used as a collector in mineral flotation, with particular relevance to copper sulfide and gold-copper flotation systems. Final suitability should be confirmed through mineralogical analysis and flotation testing.
No. Copper ores differ significantly in mineralogy, oxidation, gangue composition and flotation response. A collector that performs well on chalcopyrite-dominant sulfide ore may not give the same results on an oxidized or highly complex feed.
Junbang currently lists Ester-105 grades with active ingredient levels of ≥80% and ≥75%. Buyers should choose the grade according to plant testing, procurement requirements and total treatment cost rather than assuming the highest active content is automatically the most economical choice.
The current export specification lists 200 kg iron drums. Packaging should be reconfirmed when ordering, particularly for full-container shipments or where the destination market has special labeling or transport requirements.
Yes. For a flotation collector, laboratory testing is one of the best ways to confirm that the reagent is suitable for the specific ore and existing reagent scheme before commercial-scale purchasing.
It may be evaluated as an alternative or part of a combined collector scheme in some copper flotation circuits, but replacement should not be made solely on a kilogram-for-kilogram basis. Compare dosage, recovery, grade, selectivity and total reagent cost through laboratory and plant trials.
Buyers should normally request a technical specification, COA, SDS, packaging information and relevant shipment documents. Additional documentation may be required depending on the destination country and transport method.
There is no single factor. A reliable supplier should combine consistent product specification, manufacturing and QC capability, representative samples, technical support and dependable international supply.
Purchasing Ester-105 should begin with flotation performance, not simply with a price quotation.
A mine should first establish whether Ester-105 matches its mineralogy and flotation objective. The procurement team can then compare active content, batch consistency, packaging, documentation, supplier production capability and delivered cost.
Yantai Junbang Beneficiation Materials Co., Ltd. supplies Ester-105 and a broader range of flotation collectors, frothers and modifiers, supported by its mineral processing testing and production capabilities.
Buyers evaluating Ester-105 can review the Ester-105 product range, compare alternative Thiocarbamate collectors, or contact Junbang with ore information, required quantity, packaging and flotation targets to discuss sampling and commercial supply.
