Alclar Bayer-Process Flocculants — Stage Selection and PAM Screening Routes
ChinaPAM supplies if your enquiry says Alclar rather than one specific grade, this page is the sorting step. The family covers several distinct Bayer-process duties, and the stage you are treating changes the selection more than the brand name does. ChinaPAM can screen its PAM range for red-mud separation and related alumina-refinery duties after the exact incumbent model and the process data are supplied. Start with a model photo and the Bayer stage; ChinaPAM will name the missing inputs once, then return the appropriate test and quotation route.
Supply Route Comparison
Published reference data and the ChinaPAM route for Alclar Bayer-process flocculant family
ALCLAR is a trademark of its respective owner. ChinaPAM is an independent manufacturer and is not affiliated with, endorsed by, licensed by or a distributor for the brand owner. The family and grade names are used only to identify the products a buyer is comparing. The sources cited on this page are a current Solenis family page and a 2017 third-party research paper — they are not ChinaPAM documents and they establish nothing about ChinaPAM. The current family claims and the historical research are kept as separate subjects and are not merged. Our products are separately branded ChinaPAM grades and are not licensed copies.
| Parameter | ChinaPAM Supply Route | Alclar Bayer-process flocculant family |
|---|---|---|
| Enquiry level | Family enquiry accepted, then resolved to one exact model and one Bayer stage before a route is proposed | Presented as a flocculant family for red-mud flocculation in Bayer alumina production — Solenis current family page |
| Duty coverage | One screening programme per stage; results are not carried between stages | Four listed duties: clarification, red-mud washing, hydrate thickening, green-liquor filtration. The family page does not claim one grade covers them all. |
| Within-family consistency | No family-wide grade offered, for the same reason | The researched Alclar powders differ from each other in polyacrylamide chain size and ionic charge — 2017 HOLOS research |
| Exact model list | Route built from the exact label the buyer sends | No exact model list is published on the current family page. HP21, HP22, 662 and 3000 are the names carrying research evidence. |
| Unresolved labels | Enquiry accepted; the missing inputs are named once and the label is confirmed before anything is quoted | HP24, HP600, 3010, 661SSK and 662SSK are not covered by the held sources. No equivalents, specifications or performance figures are available for them here. |
| Assessment metrics | Settling rate, overflow clarity, underflow compaction and density, caustic-recovery objective, dose and handling robustness — scored together | The research assessed the Alclar powders with settling, compaction and turbidity metrics — 2017 HOLOS research |
| Document status | Current price, stock status, lead time, applicable TDS and sample arrangements are confirmed in the quotation. Batch-specific COA terms are confirmed with the shipment. | A current family page plus a 2017 research paper. The current family claim and the historical research are separate subjects and are not merged. |
| Current availability | Confirmed in the quotation against grade, destination and order conditions | Not established at exact-model level by the held sources |
Specifications
| Enquiry Type | Family or application level — resolved to one exact model and one Bayer stage before any route is proposed |
| Current Family Scope | Red-mud flocculation in Bayer alumina production — Solenis current family page |
| Published Duties | Clarification, red-mud washing, hydrate thickening, green-liquor filtration — four distinct duties, no single grade claimed for all |
| Exact Names With Research Evidence | HP21, HP22, 662 and 3000 — named in the 2017 HOLOS research; HP21 has its own exact page |
| Names Accepted But Unresolved | HP24, HP600, 3010, 661SSK, 662SSK — accepted as enquiry labels; no equivalents, specifications or performance figures are given for them here |
| What The Research Shows | The researched Alclar powders differ from each other in chain size and ionic charge — a family is not one chemistry |
| ChinaPAM Route | PAM range screened for red-mud separation and related alumina-refinery duties, after exact model and process data are supplied |
| Route Boundary | No family-wide primary or backup grade; selection starts from the exact label and the Bayer stage, then same-mud testing |
| Current Availability (Either Side) | Unknown in the held sources; confirmed only in a quotation |
Key Features
- Sorts a family-level Alclar enquiry into one exact model and one Bayer stage before any route is discussed
- Current family scope taken from the Solenis family page; historic chemistry differences taken from the 2017 research, with the two kept as separate subjects
- Four published duties treated as four separate selection problems: clarification, red-mud washing, hydrate thickening and green-liquor filtration
- The researched Alclar powders are shown to differ in chain size and ionic charge, which is why a family name cannot carry a single route
- Enquiry labels such as HP24, HP600, 3010, 661SSK and 662SSK are accepted and answered, but no equivalents or specifications are invented for them
- Exact-model work stays on the exact-model page: this hub does not restate HP21's published figures as family-wide facts
- Settling, overflow clarity and underflow compaction scored together, because the research records that settling speed alone misleads
- Two evidence-based failure modes surfaced, each with a verification step that catches it before bulk commitment
Applications
- Sorting an Alclar family or application enquiry into the correct stage and exact model
- Red-mud clarification and red-mud washing duties, each screened on its own stage conditions
- Hydrate thickening and green-liquor filtration duties, which the family page lists separately and which need separate selection
- Alumina-refinery screening programmes where several stages are being reviewed and each needs its own test
Get a Quote for Alclar Bayer-process flocculant family Alternative Supply
A model photo and the Bayer stage are enough to start. ChinaPAM will identify the missing inputs once, then return the appropriate test and quotation route rather than asking repeatedly.
Related Articles
The supply answer first: screening per stage and per model, not per family
ChinaPAM can screen its PAM range for red-mud separation and related alumina-refinery duties once the exact incumbent model and the process data are supplied. That is the supply answer, and the condition attached to it is not a formality: no universal Alclar replacement is promised, because no family-wide route exists to promise.
The reason sits in the sources themselves. The family is presented for red-mud flocculation in Bayer alumina production and covers four separate duties — clarification, red-mud washing, hydrate thickening and green-liquor filtration. The research on the Alclar powders it examined found they differ from each other in chain size and ionic charge. A family name therefore identifies a product area, not a chemistry, and a route selected at family level is a route selected without the information that decides the outcome.
Price, stock and lead time belong to the quotation and are not stated from the held sources.
First screen: which stage, which exact model
Two inputs do most of the sorting. The Bayer stage tells you which duty is being treated, and the exact model with any suffix tells you which evidence applies. With both, the enquiry resolves to a test plan. With neither, there is nothing to test against.
Alclar HP21 is the one name in this family with an exact independent page on this site, because the held research names it explicitly and a publisher-indexed table gives its published descriptors. HP22, 662 and 3000 also appear in that research as distinct products with their own chain-size and charge positions; this page does not restate their individual positions as a family rule.
Buyers also enquire with HP24, HP600, 3010, 661SSK and 662SSK. Those labels are real purchasing labels and the enquiry is accepted, but the held sources do not cover them, so this page gives them no equivalents, no specifications and no performance claims. Send the label or a photo of the bag and the identity is confirmed first — that is the honest order of operations, and it is cheaper than a quote built on a guess.
Three facts the sources actually establish
Each fact below is tied to a specific source, and the current family claim is kept separate from the historical research.
| Fact | Source | What it does not establish |
|---|---|---|
| Solenis currently presents Alclar as a flocculant family specifically for red-mud flocculation in Bayer alumina production. | Solenis current Alclar family page. | A current family claim only. It publishes no exact model list, and it says nothing about any individual grade's specification or availability. |
| The current family page lists four distinct duties: clarification, red-mud washing, hydrate thickening and green-liquor filtration. | Solenis current Alclar family page. | Family and application ownership only. It is not a claim that one grade covers every duty, and it does not map any grade to any stage. |
| Historic BASF research shows that selected Alclar powder products — HP21, HP22, 662 and 3000 — differ in polyacrylamide chain size and ionic charge, and were tested with settling, compaction and turbidity metrics. | 2017 HOLOS research paper, PDF pages 4-5. | Those exact historical names only. Nothing in it migrates to HP24, HP600, 3010 or the SSK suffixes, and it is not a current brand-owner specification for any of the names it does cover. |
Two failure modes and the check that catches each one
Both come out of the held sources for this family and these duties.
| Trigger | Consequence | Verification step |
|---|---|---|
| A family or a grade is chosen only for maximum settling speed. The research records the trade-off between settling rate and overflow turbidity. | Clearance speed rises while the overflow liquor quality worsens — the duty fails on the metric nobody scored. | Require settling rate, overflow turbidity and underflow compaction together, at every dose step, before a candidate is accepted. |
| One Alclar or ChinaPAM route is copied across clarification, washer, hydrate or filtration duties, or carried through a changing bauxite feed. The family page lists multiple duties, and the research identifies bauxite, solids, alkalinity, hematite and goethite content and particle size as selection variables. | The route can miss clarity, underflow density, caustic-recovery or dose goals on the stage it was never tested for. | Establish exact model and stage ownership first, then test per stage and per feed with that stage's own solids, alkalinity and mineralogy. |
Route boundary: no family-wide primary, no family-wide backup
There is no family-wide primary grade and no family-wide backup. Route selection begins with the exact incumbent label and the Bayer stage, then moves to the ChinaPAM range and to tests on your own mud.
All 26 anionic powder records in the ChinaPAM range were reviewed against this enquiry. Every matching anionic powder stays eligible until feed and trial data select one primary and one backup route. That review is per stage and per model, because the duties on this family's own published list are not interchangeable.
What the sources establish and what they do not is worth stating together. The current family page covers multiple Bayer duties. The historical research covers selected Alclar powders and shows they differ from one another. Neither source converts every named Alclar spelling into the same chemistry, and neither converts any of them into a ChinaPAM equivalent.
Intake, preparation, trial design and acceptance metrics
Useful intake, in order: exact model and suffix; Bayer stage; bauxite source and mineralogy; solids; liquor alkalinity; temperature; particle-size distribution; hematite and goethite fraction; current dose; and your goals for settling rate, overflow turbidity and underflow density.
Document the preparation and the equipment as they actually run: make-down water, solution concentration, aging, mixers, dosing points, washer or thickener geometry, and how the hot slurry is sampled. Bench equipment should be matched to the stage rather than generic. ChinaPAM powder preparation runs at a 1–3 g/L recommended window, 5 g/L maximum, and no longer than 60 minutes at working concentration. Preparation concentration is not process dosage.
Test by stage and by feed, not by name similarity. Include an untreated control and an incumbent control, a controlled dose series and replicated measurements, then a confirmation run under plant-relevant temperature and alkalinity. A candidate that has not seen hot caustic conditions has not been tested for this duty.
Pre-agree the acceptance metrics: settling rate together with overflow clarity, underflow compaction and density, the caustic-recovery objective, dose and handling robustness. Do not optimise one metric in isolation — that is the first failure mode on this page.
Go/no-go: the model-specific quote, the sample plan and the approved documents follow route selection and do not precede it. Packaging, stock, price and lead time are transaction-specific confirmations. Current price, stock status, lead time, applicable TDS and sample arrangements are confirmed in the quotation. Batch-specific COA terms are confirmed with the shipment.
Brand Equivalents & Replacements
This page sorts an Alclar family enquiry by stage and by exact model. ChinaPAM screens its PAM range against whichever stage and model the enquiry resolves to, after the process data are supplied. No family-wide equivalent exists, no universal Alclar replacement is promised, and nothing here is a tested replacement or an equivalent-performance statement.
| Brand | Grade | Notes |
|---|---|---|
| Solenis / BASF Alclar | Alclar Bayer-process flocculant family | Solenis currently presents Alclar as a flocculant family for red-mud flocculation in Bayer alumina production, listing clarification, red-mud washing, hydrate thickening and green-liquor filtration. The 2017 HOLOS research shows the Alclar powders it tested — HP21, HP22, 662 and 3000 — differ in chain size and ionic charge. No exact model list is published and no family-wide equivalent exists. ChinaPAM screens its PAM range per exact model and stage. Screening only. |
Need a replacement for a different grade? Contact us with your current product specs.
Frequently Asked Questions — Alclar Bayer-Process Flocculants — Stage Selection and PAM Screening Routes
Can ChinaPAM supply for an Alclar requirement?
ChinaPAM can screen its PAM range for red-mud separation and related alumina-refinery duties once the exact incumbent model and the process data are supplied. Start with a model photo and the Bayer stage; ChinaPAM will name the missing inputs once, then return the appropriate test and quotation route. No universal Alclar replacement is promised.
Why is there no single grade offered for the whole Alclar family?
Because the family is not one chemistry. The current family page lists four separate duties — clarification, red-mud washing, hydrate thickening and green-liquor filtration — and the 2017 research found the Alclar powders it tested differ from each other in chain size and ionic charge. A family-wide grade would mean ignoring the variables that decide the result. Selection starts from the exact label and the stage instead.
My bags read Alclar HP600 — or HP24, 3010, 661SSK, 662SSK. What can you tell me?
The enquiry is accepted, but not with figures. Those labels are not covered by the sources held for this page, so there are no equivalents, specifications or performance claims to give for them here. Send the label or a bag photo plus the Bayer stage; identity is confirmed first, and the test route follows from that rather than from an assumption based on a similar-looking number.
Do the researched grades HP21, HP22, 662 and 3000 behave the same way?
No — the research specifically shows they differ in polyacrylamide chain size and ionic charge. That is the most useful thing the research says for a buyer: a nearby number in the same family is not a substitute for the one your plant is dosing. HP21 has its own exact page on this site because the sources cover it in detail.
Can one screening result cover our clarification, washer and filtration duties?
No. Those are separate duties on the family's own published list, and the research names bauxite, solids, alkalinity, hematite and goethite content and particle size as the variables that move performance. A route copied across stages, or carried through a changing bauxite feed, can miss clarity, underflow density, caustic-recovery or dose goals. Each stage gets its own test.
Is the fastest-settling candidate the right choice?
Not on its own. The research records that higher settling speed came with higher overflow turbidity. Judging on settling alone can clear the mud faster while degrading the liquor you are trying to recover. Settling rate, overflow clarity and underflow compaction have to be scored together.
What is confirmed in the quotation, and what is not stated here?
Current price, stock status, lead time, applicable TDS and sample arrangements are confirmed in the quotation. Batch-specific COA terms are confirmed with the shipment.
Trademark notice. Alclar Bayer-process flocculant family and all other third-party product and brand names on this page are trademarks or registered trademarks of their respective owners. Henan Jinghua New Material Technology Co., Ltd. is not affiliated with, endorsed by, sponsored by or authorised by those owners, and no such relationship is implied. Those names are used here for the sole purpose of identifying the products our grades are compared against, which is necessary to describe what we supply. Our products are separately branded ChinaPAM grades and are not licensed copies. Third-party facts on this page are attributed separately to the current Solenis Alclar family page and to the 2017 HOLOS research paper; the current family claim and the historical research are not merged, and neither is a current exact-model specification. Performance on your process should be confirmed by jar test or CST test before any change of supply.